1️⃣ Prep Cauliflower
Steam florets for 3 mins, drain well, and pat dry.
2️⃣ Cook Meat & Veggies
Brown sausage in a skillet for 15 mins, breaking it apart. Drain fat.
In the same pan, sauté mushrooms in olive oil for 10 mins.
3️⃣ Layer the Casserole
Preheat oven to 400°F (200°C).
Spread ½ cup sauce in a casserole dish.
Layer half of: cauliflower, sausage, mushrooms, and peppers.
Top with ½ cup sauce, half the pepperoni, and 3 oz mozzarella.
Repeat layers, ending with remaining mozzarella, Parmesan, and pepperoni.
4️⃣ Bake & Serve
Bake 30 mins until bubbly and golden.
Let cool slightly before slicing.