Preheat and prep: Set your oven to 400°F (200°C). Lightly spray a 9x13-inch baking dish with cooking spray.
Season the chicken: Pat chicken pieces dry.
Toss with olive oil, garlic, onion powder, smoked paprika, salt, and pepper. You want every piece lightly coated.
Par-cook the broccoli: If using fresh florets, microwave them for 2–3 minutes to soften slightly, or blanch in boiling water for 1 minute and drain well. If using frozen, break up any clumps and pat dry.
This helps avoid excess water in the bake.
Make the protein-packed sauce: In a bowl, whisk chicken broth, Greek yogurt, cottage cheese (blend first if you want smooth), Dijon, and a pinch of salt and pepper. Stir in half the cheddar and half the mozzarella. Add red pepper flakes if using.
Assemble the bake: Spread broccoli in an even layer in the dish.
Scatter seasoned chicken over the top. Pour the sauce evenly across everything, nudging it into corners with a spatula.
Add the cheesy topping: Sprinkle remaining cheddar and mozzarella, then dust with Parmesan. If you like a crispy finish, add a light layer of panko or almond meal.
Bake: Place uncovered in the oven for 22–28 minutes, until the chicken is cooked through and the edges are bubbling.
Internal temperature for chicken should reach 165°F (74°C).
Broil for color (optional): Switch to broil for 1–2 minutes to brown the top. Watch closely to avoid burning.
Rest and garnish: Let it rest 5 minutes so the sauce settles. Finish with chopped chives or parsley.
Serve: Scoop generous portions into bowls.
It’s great alone or over quinoa, brown rice, or cauliflower rice.