Preheat the Oven: Set your oven (or toaster oven) to 375°F (190°C). Lightly grease an 8x8-inch baking dish with oil spray or a small swipe of olive oil.
Mix the Base: In a medium mixing bowl, combine the ricotta cheese and egg. Whisk them together until fully blended and smooth. This is your creamy base.
Add Flavor and Texture: Stir in the mozzarella cheese, Parmesan cheese, Italian seasoning, garlic powder, and salt. If you’re adding herbs like parsley or spinach, fold them in now for an extra layer of flavor and color.
Pour into the Dish: Use a rubber spatula to scrape the mixture evenly into your greased baking dish. Smooth out the top to ensure even baking.
Bake It Up: Place the dish on the center rack of your oven and bake for 25–28 minutes, or until the top is lightly golden and set. The edges will slightly puff and pull away from the sides.
Cool Before Serving: Remove from the oven and let it rest for 5 minutes. This helps the texture firm up, making it easier to slice or scoop.
Serve or Store: Enjoy warm as a main meal, or cool completely and store in an airtight container in the fridge for up to 4 days. It also reheats well in the microwave or air fryer.
