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Say goodbye to boring, bland poultry and hello to wildly juicy, flavor-packed perfection with this buttermilk chicken marinade—where creamy tang meets bold southwest spice in the most irresistibly delicious way. With rich buttermilk, smoky spices, and a bright citrusy kick, this southwest marinade transforms everyday chicken into tender, flavor-soaked magic every single time. Bold, easy, and endlessly versatile—it’s exactly what your weeknight dinners have been missing.

“Fabulous!!! Chicken breasts came out very flavorful and tender.”

– KATH
Overhead photo of eight southwest grilled chicken thighs that were marinated in buttermilk.

Update: This recipe was originally published in August 2017. I made updates to the article below to include more information about making this southwest buttermilk marinade for chicken at home.

Hi, friends! If you’ve been looking for a chicken recipe that’s unbelievably tender, wildly flavorful, and guaranteed to disappear the moment it hits the dinner table, this buttermilk marinade transforms even the simplest chicken breast into something juicy and truly irresistible:

Table of Contents

About this buttermilk marinade for chicken

Imagine sinking your teeth into perfectly cooked chicken that’s unbelievably tender, perfectly juicy, and gently infused with tangy buttermilk, smoky paprika, warming cumin, punchy garlic, just a hint of heat, and a gentle kiss of brown sugar sweetness. That’s exactly what this southwest chicken marinade delivers.

The buttermilk works behind the scenes to gently tenderize the chicken, while the spices create a bold, sun-kissed flavor that feels like a backyard cookout in every bite. And, once cooked, the exterior gets lightly charred (especially if grilled), while the inside stays melt-in-your-mouth soft and wonderfully juicy. Essentially, this buttermilk marinade for chicken is all about big flavor and effortless cooking

And, best of all, this recipe requires simple pantry staples, just a few minutes of prep, and works beautifully with chicken breasts, thighs, drumsticks—whatever you’ve got or love. Plus, it’s endlessly versatile. Serve it with warm tortillas, grilled veggies, slice over a crisp salad or rice bowls, and you’ve got a meal that feels deliciously special without being fussy.

Why you’ll love this recipe

TL;DR? Get the gist on this recipe for buttermilk chicken marinade here:

  • Ultra-Tender, Juicy Chicken. The acidity in buttermilk gently breaks down the chicken fibers, creating the most tender, succulent texture—especially for lean chicken breasts.
  • Southwestern Spices Bring Bold Flavor. A combination of chili powder, cumin, smoked paprika, garlic, brown sugar, and lime zest creates a beautifully vibrant flavor profile that’s ideally smoky, zesty, savory, and tangy with just a hint of spice and sweetness. 
  • Effortless and Foolproof. Simply mix, marinate, cook. That’s it! This recipe is incredibly forgiving and perfect for home cooks of any level.
  • Any-Season, All-Occasion Appeal. Grill the marinated chicken in the summer, roast it in winter, and pan-sear it anytime. Regardless of how you cook the buttermilk chicken, it’s family-friendly, crowd-pleasing, and endlessly versatile.
  • Pantry-Friendly Ingredients. If you’ve got a well-stocked pantry, chances are good that you’ve got everything already on hand, making this a no-stress, high-reward recipe.

If you’re looking for more homemade marinades, check out this marinade for tomatoes and marinade for mushrooms next.

Overhead action photo of buttermilk for chicken marinade being poured into a bowl.

Ingredients for buttermilk chicken marinade

As promised, you just need easy to find ingredients to make this recipe for buttermilk chicken marinade:

  • Buttermilk. The star ingredient in this buttermilk marinade for chicken. It tenderizes the meat and adds a subtle tang. Tip: If you don’t have buttermilk, mix 1 cup milk with 1 tbsp lemon juice or vinegar.
  • Chicken (Breasts or Thighs). Use chicken thighs for extra richness or chicken breast if you prefer lean meat.
  • Hot Sauce. For a little customizable gentle heat.
  • Brown Sugar. Lends a touch of sweetness to balance out the tangy buttermilk and southwest spices.
  • Garlic Powder and Onion Powder. This gives the marinade savory backbone.
  • Smoked Paprika. Provides warmth and a subtle smoky kick.
  • Ground Cumin. Essential for that classic southwest chicken marinade flavor.
  • Ground Coriander. Made from the dried seeds of the coriander plant, it lends mild, citrusy flavor.
  • Chili Powder. Gives mild heat and complexity.
  • Whole Lime. Fresh lime zest brightens the marinade and enhances the Southwest flavor. While lime wedges make a terrific garnish.
  • Kosher Salt and Ground Black Pepper. Indispensable for overall flavor.

Recipe variations

  • Spicy Southwest Version: Add cayenne pepper or use chipotle chili powder for extra heat.
  • Herb-Forward Twist: Mix in chopped fresh cilantro, oregano, or parsley for brightness.
  • Garlic Lover’s Chicken Marinade: Add in freshly grated garlic for a bold, savory punch.
  • Dairy-Free Option: Swap out the buttermilk and use coconut milk mixed with a little lime juice, but please note that the flavor will differ slightly.
  • Tex-Mex Style: Toss in a pinch of Mexican oregano and a splash of fresh orange juice for a citrusy twist.
  • Smoky Buttermilk Marinade: Add a couple drops of liquid smoke and a little bit more smoked paprika for smokier flavor.
  • Spice Shortcut: Swap out the individual spices and use fajita seasoning or taco seasoning to save a little time.

If chicken is on sale at the grocery store, put it to good use here: BBQ Rosemary Chicken, and Grilled Chipotle Chicken.

Action photo of a whisk stirring buttermilk southwest marinade for chicken.

Professional chef expert tips for perfect results every time

As a professionally trained and restaurant-experienced chef, here are my top secrets for success:

  • Use Full Fat Buttermilk. For the richest flavor.
  • Marinate Long Enough. But not too long—aim for at least 2 hours, ideally overnight. Avoid over-marinating (24+ hours), as the meat can become too soft.
  • Pat Chicken Dry Before Cooking. To ensure better browning or grill marks.
  • Brush with Oil. To prevent the chicken from sticking to the grill, pan, or baking dish.
  • Don’t Skip the Salt. Proper seasoning is essential to making the southwestern marinade for chicken shine.
  • Use Instant Read Thermometer. Be sure to cook chicken to a safe internal temperature of 165-degrees Fahrenheit.
  • Let Chicken Rest. After cooking, let the chicken sit for at least 5 minutes, so the juices have a chance to redistribute—this keeps the meat juicy and flavorful.

FAQs: frequently asked questions

Below you’ll find the most common questions and answers about making this recipe. If you have a question you’d like answered, please drop it in the comments section below!

Does buttermilk really make chicken more tender?

Yes, it sure does. The acidity gently tenderizes the meat, without making it mushy.

What kind of chicken works best?

Truthfully, that depends upon your preferences. Chicken breasts are the most common choice; however, thighs are an excellent option if you want extra juiciness and more flavor.

Can I use this buttermilk marinade on chicken thighs or drumsticks?

Absolutely! This southwest marinade chicken is fantastic on the grill and helps the meat develop a beautiful char.

Is this a spicy marinade?

Absolutely! The acidity in cultured buttermilk is responsible for breaking down the

Can I use this southwest chicken marinade for grilling?

Absolutely! This southwest marinade chicken is fantastic on the grill and helps the meat develop a beautiful char.

Can I bake the chicken instead of grilling?

Yes, you sure can! This marinade works great for any type of cooking. Just bake at 400°F for 12–25 minutes depending upon cut and thickness.

How long can I marinate chicken in buttermilk?

You’ll want to marinate for at least 2 hours, but overnight is best for maximum flavor and tenderness. And don’t marinate for over 24 hours, or it can make the meat too soft. 

Can I make this marinade ahead of time?

For sure. You can mix the marinade together up to 2 days in advance and store it in the fridge.

Can I freeze marinated chicken in buttermilk?

Yes. Just freeze the raw chicken directly in the marinade for up to 2 months for easy meal prep.

Overhead photo of raw chicken pieces marinated in buttermilk.

Serving chicken marinated with buttermilk

  • Southwestern-Style Dinner. Pair with cilantro-lime rice, black beans, and a bright salsa for a fast, flavorful meal
  • Pair with Grilled Veggies. Serve with grilled or roasted vegetables like peppers, onions, and/or zucchini and warm flour tortillas for a balanced plate.
  • Over Salad. Slice the chicken and serve over a big Southwest salad with corn, black beans, shredded cheese, and tomatoes.
  • Stuff in Tacos and Burritos. Slice it thin for tacos, burritos, or burrito bowls with lettuce, avocado, tomato salsa, and cheese.

Unique serving suggestions

Close-up photo of a grilled chicken thigh that was marinated in a southwest buttermilk mixture.

Storing leftovers

Allow leftover buttermilk marinated chicken to cool to room temperature before storing according to the instructions below:

  • Refrigerator Storage: Store leftover cooked chicken in an airtight container in the fridge for up to 4 days.
  • Freezing Instructions: Store leftover buttermilk chicken in freezer-safe resealable bag or airtight container in the freezer for up to 2 months. When ready to enjoy, thaw it overnight in the fridge, before reheating in the microwave. 
  • Reheating Instructions: Gently reheat any leftover chicken either in a skillet over low heat or in a 300°F oven until warm throughout.
Close-up photo of a grilled and buttermilk marinated chicken thigh.

This buttermilk chicken marinade brings together everything you love about Southwestern cuisine—smoky spices, bright citrus, creamy tang, and juicy, tender chicken every single time. Easy to whip together and reliable delicious, it’s simple enough for a weeknight, tasty enough for guests, and flexible enough to work in tacos, bowls, salads, sandwiches, and beyond.

I hope you give this southwest marinade for chicken a try. But, don’t forget to come back and let me know how it went over in the comments section below—I truly love cheering you on in the kitchen.

Until next time, cheers,

Cheyanne

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More recipes for marinades

Overhead photo of two pounds of cooked buttermilk marinated chicken on a large white platter with herbs and lime wedges.

Buttermilk Chicken Marinade

5 from 7 votes
Author: Cheyanne Holzworth
Total Time: 10 minutes
Prep Time: 10 minutes
Servings: 2 Cups
Print Recipe Pin Recipe
Say goodbye to boring, bland poultry and hello to wildly juicy, flavor-packed perfection with this buttermilk chicken marinade—where creamy tang meets bold southwest spice in the most irresistibly delicious way. With rich buttermilk, smoky spices, and a bright citrusy kick, this southwest marinade transforms everyday chicken into tender, flavor-soaked magic every single time. Bold, easy, and endlessly versatile—it’s exactly what your weeknight dinners have been missing.

Equipment

  • 1 Large Bowl or Shallow Dish – with whisk

Ingredients 

  • 2 Cups Buttermilk
  • 2 TBS Light Brown Sugar – packed
  • ½ – 2 TBS Hot Sauce – to taste
  • 1 TBS EACH: Cumin., Smoked Paprika, and Chili Powder
  • 2 tsp Garlic Powder
  • 1 tsp EACH: Onion Powder and Ground Coriander
  • 1 whole Lime – zested; cut into wedges
  • To Taste Kosher Salt and Ground Black Pepper
  • 2 Pounds Boneless Skinless Chicken – breasts or thighs; use tins of fork to poke holes in chicken and pound breasts to an even thickness
  • As Needed Neutral Oil – such as vegetable oil or canola oil

Instructions

  • Mix the Buttermilk Marinade: To a large shallow dish or large bowl, add the buttermilk, sugar, hot sauce, cumin, smoked paprika, chili powder, garlic powder, onion powder, coriander, and 1 gently packed teaspoon lime zest.
    And then add 1 teaspoon of kosher salt and a ¼ teaspoon ground black pepper per pound of chicken.
    Grab a whisk and vigorously stir the ingredients together until well combined.
  • Marinate the Chicken: Add the pieces of chicken to the buttermilk marinade and use tongs to turn the chicken, fully coating it in the marinade.
    Cover the dish / bowl, place the chicken in the refrigerator, and let it marinate for at least 2 hours, preferably overnight.
  • Prepare for Cooking: About 45 to 30 minutes before cooking, remove the chicken from the refrigerator and let it come to room temperature.
    Preheat the grill to medium heat and brush the grates with oil or preheat the oven to 400 degrees Fahrenheit and line a baking sheet with aluminum or parchment.
    Just before cooking, remove the chicken pieces from the marinade, discarding the marinade, pat the chicken dry with paper towels, lightly brush or spray both sides with oil.
  • Cook the Buttermilk Chicken
    Grilling Instructions: Place the pieces of chicken onto the greased grill grates over direct heat and cook, turning occasionally for 16-30 minutes depending upon cut of chicken, or until it reaches 160-165 degrees Fahrenheit on an instant read thermometer when temped in the thickest portion of the meat.
    Oven Cooking Instructions: Place the pieces of chicken onto the prepared sheet pan. Place into the preheated oven and bake for 16-30 minutes depending upon cut of chicken, or until it reaches 160-165 degrees Fahrenheit on an instant read thermometer when temped in the thickest portion of the meat
  • Rest Chicken: Remove the chicken from the grill or oven and allow it to rest for 5 minutes before slicing and serving.
  • Serve Buttermilk Marinated Chicken: Garnish the chicken with chopped cilantro, flakey sea salt, and freshly ground black pepper; serve lime wedges on the side and enjoy.

Notes

  • Hot Sauce. Use this to taste. How much really does depend upon the type of hot sauce you’re using, your specific taste buds, and who you’re serving. I’ll typically use 2 tablespoons of Franks Hot sauce or 1/2 tablespoon Tabasco. 
  • Need to Scale the Recipe? Hover your mouse over the number of servings in the recipe card. You’ll see a sliding scale pop up, you can use that to scale the recipe up or down as needed.
  • Got questions? I’ve got answers! If you ever run into an issue, have a question, or need any clarification – please feel free to drop them in the comments section. I’m happy to help when I can! 
Nutritional information is provided as a courtesy and the nutrition facts are an estimate based upon 2 servings (1 pound of marinated chicken per serving). Exact information will depend upon the brands of ingredients and precise measurements used.

Nutrition

Calories: 661kcal    Carbohydrates: 23g    Protein: 101g    Fat: 16g    Saturated Fat: 5g    Polyunsaturated Fat: 2g    Monounsaturated Fat: 5g    Trans Fat: 0.1g    Cholesterol: 304mg    Sodium: 832mg    Potassium: 1992mg    Fiber: 2g    Sugar: 18g    Vitamin A: 2069IU    Vitamin C: 11mg    Calcium: 186mg    Iron: 3mg
Course: dinner, marinade
Cuisine: American

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