Creating your Family-Size Spinach Mushroom Cheesy Bake is straightforward. Follow these steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Sauté Mushrooms: In a skillet, heat olive oil over medium heat. Add sliced mushrooms and cook until they are golden brown and their moisture has evaporated, about 5-7 minutes.
3. Mix Cheese Filling: In a large bowl, combine ricotta cheese, half of the mozzarella, half of the parmesan, and spices. Stir in the eggs and mix until well combined.
4. Add Spinach: Fold the chopped spinach into the cheese mixture, ensuring it’s evenly distributed.
5. Combine Ingredients: Once the mushrooms are cooked, let them cool for a few minutes. Then fold them into the spinach and cheese mixture.
6. Prepare Baking Dish: Grease a large baking dish with a little olive oil or cooking spray.
7. Layer the Mixture: Spread the spinach and mushroom mixture evenly in the prepared dish.
8. Top with Breadcrumbs: Sprinkle the remaining mozzarella and parmesan cheese over the top, followed by a generous layer of breadcrumbs for added crunch.
9. Bake: Place the dish in the preheated oven and bake for 35-40 minutes, or until the top is golden and bubbly.
10. Cool and Serve: Let the bake cool for a few minutes before slicing it into squares.

By following these steps, you’ll create a hearty and incredible dish that is sure to impress!