This chicken casserole is the ultimate answer to weeknight dinner fatigue, combining succulent shredded rotisserie chicken breast with a velvety, garlic-infused Greek yogurt base. Unlike traditional heavy cream versions, this recipe focuses on bright flavors and a satisfyingly crunchy toasted almond flour topping that will have everyone asking for seconds.
If you are looking for a meal that balances comfort with nutrition, this chicken casserole delivers. The vibrant emerald broccoli florets provide a fresh snap, while the sharp cheddar cheese creates those iconic golden bubbles that make every bite feel indulgent. It’s a high-protein, low-carb masterpiece designed to satisfy the whole family.

Why You Will Love This Cheesy Broccoli Chicken Casserole
- Unbeatable Texture: Experience the contrast between the velvety Greek yogurt sauce and the crunchy toasted almond flour crust.
- Visual Appeal: The bright emerald broccoli florets look stunning against the ivory-colored garlic sauce and matte white ceramic dish.
- High Protein & Low Carb: A keto-friendly chicken casserole that doesn’t sacrifice flavor for macros.
- Fast Prep: By using rotisserie chicken, you cut the preparation time in half without losing any quality.
If you enjoy this flavor profile, you might also want to try our Low Carb Chicken Casserole or the savory French Chicken Casserole.
The Essential Ingredients for a Gourmet Finish
To achieve the specific visual and flavor profile of this chicken casserole, every ingredient serves a purpose. Here is what you need:
- Shredded Rotisserie Chicken Breast (3 cups / 450g): Provides a tender, pre-seasoned protein base that absorbs the sauce perfectly.
- Greek Yogurt (1.5 cups / 360ml): The secret to a thick, velvety, ivory-colored base without the need for heavy cream.
- Fresh Broccoli Florets (3 cups / 450g): We use fresh florets to ensure they turn a bright emerald green during the bake.
- Sharp White and Yellow Cheddar (1.5 cups / 170g): A blend creates a “bubbling crown” of color and deep, sharp flavor.
- Almond Flour (1/2 cup / 50g): When toasted, this provides the toasted almond flour crumbs for a signature crunch.
- Fresh Garlic (3 cloves, minced): Sautéed lightly to infuse the yogurt base with aromatic depth.
- Fresh Chives & Cracked Black Pepper: These are the essential garnishes that provide the macro-shot finish.
For more cheesy goodness, don’t miss our Cheesy Broccoli Chicken and Rice Casserole.

How to Make the Perfect Chicken Casserole Step-by-Step
1. Prepare the Velvety Yogurt and Garlic Base
In a large mixing bowl, whisk together the Greek yogurt, minced garlic, and a pinch of salt. The goal is a thick, velvety sauce that coats the chicken without becoming watery. Ensure the yogurt is at room temperature to prevent curdling when it hits the heat.
2. Prep the Broccoli and Chicken
Steam your broccoli florets for just 2-3 minutes until they are bright emerald but still have a firm snap. Fold the shredded rotisserie chicken and steamed broccoli into the yogurt mixture gently. You want the broccoli to remain intact for that beautiful visual layering.
3. Assemble in the White Ceramic Dish
Transfer the mixture into a matte white ceramic baking dish. Spread it evenly, ensuring the chicken and broccoli are well distributed. Sprinkle the sharp cheddar blend across the top, creating a thick layer that will eventually become a bubbling crown of melted cheese.
4. The Secret Almond Flour Crust
In a small pan, lightly toast the almond flour with a teaspoon of olive oil until it reaches a pale golden brown. Sprinkle this over the cheese layer. This ensures the toasted almond flour crumbs remain crunchy rather than getting soggy in the sauce.
5. Bake to Golden Perfection
Place the dish in a preheated oven at 375°F (190°C) for 20-25 minutes. You are looking for the cheese to be bubbling and slightly browned at the edges. The sauce should be set but still look creamy and ivory-colored.
Expert Tips for the Ultimate Chicken Casserole
- Drain the Broccoli: Ensure your steamed broccoli is patted dry before adding it to the sauce to prevent a “soupy” casserole.
- Freshly Grated Cheese: Use blocks of sharp cheddar and grate them yourself. Pre-shredded cheese is coated in starch and won’t give you that bubbling crown effect.
- Garnish Timing: Only add the shower of micro-chives and large flakes of cracked black pepper immediately before serving to maintain their vibrant color and aroma.
- Internal Links: If you love these bold flavors, check out our Tuscan Chicken Casserole or the spicy Jalapeño Popper Chicken Casserole.
Storage, Reheating, and Meal Prep
This chicken casserole is a meal prep dream. You can store leftovers in an airtight container for up to 4 days. When reheating, use the oven at 350°F (175°C) to keep the almond flour crust crispy.
Can you freeze this? Yes! However, the Greek yogurt sauce may change texture slightly upon thawing. For best results, freeze the assembled casserole before baking, then bake from frozen, adding an extra 15 minutes to the timer.
What to Serve With Your Chicken Casserole
Because this dish is rich and creamy, it pairs beautifully with a light arugula salad dressed in lemon vinaigrette. If you aren’t watching carbs, a side of roasted fingerling potatoes or crusty sourdough bread is perfect for mopping up the velvety garlic sauce.
Frequently Asked Questions
Yes, but you must cook it first. Sauté or poach chicken breast and shred it before folding it into the yogurt base to ensure the baking time remains consistent.
Use full-fat Greek yogurt and ensure it is at room temperature before mixing. The fat content and temperate help stabilize the sauce under heat.
Absolutely. By using almond flour instead of breadcrumbs and Greek yogurt instead of a flour-based roux, this recipe is low in carbs and high in protein.
Reheat in the oven or an air fryer at 350°F (175°C) for 5-8 minutes. This restores the crunch to the almond flour crust which can soften in the microwave.
The Ultimate Chicken Casserole Recipe Card

Chicken Casserole with Broccoli and Toasted Almond Crust
Ingredients
Equipment
Method
- In a large bowl, whisk together the Greek yogurt and minced garlic until it forms a velvety, ivory-colored base.
- Gently fold the shredded chicken and bright green broccoli florets into the yogurt sauce.
- Transfer the mixture to a white ceramic baking dish and top with the shredded sharp cheddar.
- Sprinkle the toasted almond flour over the cheese. Bake at 375°F (190°C) for 25 minutes until bubbling and golden.
- Garnish with fresh chives and coarse cracked black pepper before serving.
Notes
Use a mix of white and yellow cheddar for the best visual bubbling effect.

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Follow sunlit_table for more gourmet home cooking inspiration. If you made this dish, please leave a 5-star rating and upload a photo of your casserole in the comments below. Seeing your bright emerald broccoli and bubbling cheddar makes our day!