Easy Gluten-Free BBQ Chicken Casserole with Corn (High-Protein)

This Easy Gluten-Free BBQ Chicken Casserole with Corn brings together tender shredded chicken breast, sweet sweet corn, black beans, and melted sharp cheddar cheese in a smoky barbecue bake. By swapping out heavy cream bases for a blend of tangy low-sugar BBQ sauce and Greek yogurt, this dinner packs serious high-protein comfort without feeling heavy.

Whether you are pulling together an easy weeknight dinner for the family or packing meal-prep containers for the work week, this dish holds its texture and flavor remarkably well. If you love smoky, savory casseroles, you might also enjoy this high-protein buffalo chicken sweet potato bake for another easy weeknight win.

Why This Recipe Works

• High-Protein & Gluten-Free: Delivers over 38 grams of protein per serving using lean chicken breast, black beans, and plain Greek yogurt instead of gluten-containing canned soup bases.
• Moisture Balance: Combining Greek yogurt directly with low-sugar BBQ sauce keeps the chicken exceptionally moist during baking without creating a watery bottom.
• Meal-Prep & Packable Friendly: Holds structure when sliced, making it an ideal option for reheating in a work lunchbox or prepping ahead for busy nights.

Ingredients

• Chicken Breast: 1.5 lbs cooked boneless, skinless chicken breast, shredded (about 4 cups).
• Barbecue Sauce: 3/4 cup gluten-free low-sugar BBQ sauce (such as G Hughes or Sweet Baby Ray's No Sugar Added).
• Plain Greek Yogurt: 1/2 cup 2% or nonfat plain Greek yogurt for creaminess and added protein.
• Sweet Corn: 1 cup frozen sweet corn kernels (thawed and drained) or drained canned corn.
• Black Beans: 1 can (15 oz) black beans, rinsed and drained thoroughly.
• Red Onion: 1/2 cup finely diced red onion.
• Sharp Cheddar Cheese: 1 cup shredded reduced-fat or sharp cheddar cheese, divided.
• Smoked Paprika & Garlic Powder: 1/2 tsp smoked paprika and 1/2 tsp garlic powder for warm depth.
• Salt & Black Pepper: 1/4 tsp kosher salt and 1/4 tsp freshly cracked black pepper.
• Fresh Cilantro: 2 tbsp chopped fresh cilantro for garnish (optional).

Equipment Needed

• 9x13-inch baking dish or 2.5-quart casserole dish
• Large mixing bowl
• Measuring cups and spoons
• Rubber spatula

Step-by-Step Instructions

1. Prep Oven & Dish: Preheat your oven to 375°F (190°C). Lightly spray a 9x13-inch baking dish with non-stick olive oil or avocado oil spray.
2. Mix the BBQ Yogurt Base: In a large mixing bowl, whisk together the gluten-free BBQ sauce, plain Greek yogurt, smoked paprika, garlic powder, salt, and black pepper until smooth and fully combined.
3. Combine Ingredients: Add the shredded chicken, sweet corn, rinsed black beans, diced red onion, and 1/2 cup of the shredded cheddar cheese into the bowl. Fold gently with a rubber spatula until every piece of chicken is evenly coated.
4. Transfer & Top: Spread the mixture evenly into the prepared baking dish using the spatula to press it into a uniform layer. Sprinkle the remaining 1/2 cup of shredded cheddar cheese across the top.
5. Bake to Bubble: Bake uncovered at 375°F (190°C) for 22–25 minutes, or until the edges are bubbling and the cheese on top is fully melted and lightly golden brown.
6. Rest & Garnish: Remove from the oven and let rest for 5 minutes to allow the juices to set before slicing. Garnish with chopped fresh cilantro and serve warm.

Chef Tips for Best Results

• Thoroughly Drain Beans & Corn: Excess water will thin out your barbecue sauce mixture. Pat the drained black beans and thawed corn dry with a paper towel before adding them to the bowl.
• Shred Chicken Finely: Finely shredded chicken breast absorbs the BBQ yogurt sauce much better than thick chunks, ensuring every bite is flavorful. Rotisserie chicken works great here as long as it is certified gluten-free.
• Grating Cheese Yourself: Pre-shredded packaged cheese contains cellulose coatings that inhibit smooth melting. Grating your own block of sharp cheddar yields a far superior melted topping.

Substitutions & Variations

• Protein Swap: Lean ground turkey or pulled pork shoulder can easily replace shredded chicken breast.
• Spicy BBQ Kick: Add 1 diced jalapeño or a pinch of cayenne pepper into the BBQ mixture for added heat.
• Dairy-Free Option: Use a dairy-free plain plant yogurt (such as almond milk or coconut plain yogurt) and dairy-free cheddar shreds.

Storage, Meal Prep & Packing Advice

This casserole is an exceptional option for make-ahead meal prep. If you frequently prep lunches, pair this recipe alongside these high-protein BBQ chicken stuffed sweet potatoes for variety during the week.

• Refrigeration: Store leftover casserole in air-tight glass containers in the refrigerator for up to 4 days.
• Work & School Lunch Packing: Portion individual slices directly into microwave-safe meal prep containers. Transport in an insulated lunch bag with an ice pack if stored away from a fridge for more than 2 hours.
• Reheating: Microwave on high in 60-second intervals until warmed through (internal temp reaches 165°F). To retain a crisper top, reheat in an oven or air fryer at 350°F for 6–8 minutes.
• Freezing: Bake, cool completely, and wrap tightly in foil before freezing for up to 2 months. Thaw overnight in the fridge before reheating.

Nutrition Facts

Nutrient	Amount Per Serving (1/6th recipe)
Calories	340 kcal
Protein	39 g
Total Carbohydrates	24 g
Dietary Fiber	4 g
Net Carbs	20 g
Total Fat	9 g
Sugars	6 g
Sodium	580 mg

Frequently Asked Questions

Is this BBQ chicken casserole naturally gluten-free?

Yes! The recipe relies on naturally gluten-free whole foods like chicken breast, corn, and black beans. Just ensure your brand of store-bought BBQ sauce is certified gluten-free.

Can I make this casserole ahead of time for work lunches?

Absolutely. Assemble the casserole fully in your dish, cover with plastic wrap, and store in the fridge overnight. Bake fresh the next day, adding 5 extra minutes to the baking time.

Will the Greek yogurt curdle when baked in the oven?

Mixing plain Greek yogurt thoroughly with the barbecue sauce before folding in the chicken stabilizes the proteins and prevents curdling, yielding a smooth creaminess.

How do I reheat this in an office microwave without drying it out?

Dampen a paper towel and place it loosely over your microwave-safe meal prep container. Heat on 70% power for 90 seconds to retain moisture.

Can I use canned corn instead of frozen sweet corn?

Yes, canned corn works great. Just drain the liquid thoroughly and pat the corn dry with a paper towel before mixing it into the recipe.

What can I serve alongside this casserole for dinner?

A light green garden salad, roasted green beans, or steamed broccoli complement the smoky sweet BBQ flavor profile perfectly.

Easy Gluten-Free BBQ Chicken Casserole with Corn

Fit Fork Recipes — Healthy Dinner & Packable Lunch

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Prep Time
10 mins

Cook Time
25 mins

Total Time
35 mins

Servings
6 servings

Calories
340 kcal

Ingredients

• 1.5 lbs cooked boneless, skinless chicken breast, shredded (about 4 cups)
• 3/4 cup gluten-free low-sugar BBQ sauce
• 1/2 cup 2% plain Greek yogurt
• 1 cup frozen sweet corn kernels, thawed and drained
• 1 can (15 oz) black beans, rinsed and drained
• 1/2 cup finely diced red onion
• 1 cup shredded sharp cheddar cheese, divided
• 1/2 tsp smoked paprika
• 1/2 tsp garlic powder
• 1/4 tsp kosher salt
• 1/4 tsp black pepper
• 2 tbsp chopped fresh cilantro (optional garnish)

Instructions

1. Preheat oven to 375°F (190°C). Spray a 9x13-inch baking dish with non-stick spray.
2. In a large bowl, whisk together BBQ sauce, plain Greek yogurt, smoked paprika, garlic powder, salt, and pepper until uniform.
3. Fold shredded chicken, sweet corn, black beans, red onion, and 1/2 cup cheddar cheese into the barbecue yogurt sauce until evenly coated.
4. Transfer to the baking dish, smoothing into an even layer. Top with remaining 1/2 cup cheddar cheese.
5. Bake for 22–25 minutes until golden and bubbling at the edges. Rest 5 minutes, garnish with fresh cilantro, and serve.

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