Creating the Pizza Cottage Cheese Bake is straightforward. Follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Mix Cottage Cheese: In a large mixing bowl, combine the cottage cheese, mozzarella cheese, Italian seasoning, garlic powder, onion powder, black pepper, and salt. Stir until well incorporated.
3. Prepare Baking Dish: Grease a 9×13-inch baking dish with cooking spray or olive oil.
4. Layer Ingredients: Spread half of the marinara sauce on the bottom of the baking dish.
5. Add Cottage Cheese Mixture: Spoon the cottage cheese mixture evenly over the marinara sauce.
6. Add Vegetables: Layer the chopped bell peppers, sliced mushrooms, and diced tomatoes on top of the cottage cheese mixture.
7. Top with Sauce: Pour the remaining marinara sauce over the vegetables, ensuring even coverage.
8. Sprinkle Parmesan: Top the bake with grated Parmesan cheese.
9. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden.
10. Cool Slightly: Remove from the oven and let it cool for a few minutes before serving.

These steps will guide you to create a delicious Pizza Cottage Cheese Bake that is sure to impress!