Chicken Sausage And Roasted Cauliflower Casserole

Ingredients : 1 head cauliflower cut into florets 1 lemon juiced 1 tablespoon olive oil 2 minced garlic cloves salt and ground black pepper to taste 1 (16 ounce) package chicken sausage 2 tablespoons grated Parmesan cheese ½ cup ricotta cheese 1 pinch red pepper flakes or to taste (Optional)...