Creating Ground Beef and Zucchini Casserole can be straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Sauté Beef: Heat a large skillet over medium heat, add a bit of olive oil, and cook the ground beef until browned. Drain excess fat.
3. Add Vegetables: Add chopped onion and minced garlic to the skillet, sauté until softened.
4. Incorporate Zucchini: Stir in the sliced zucchini and cook until just tender, about 5-7 minutes.
5. Mix Tomatoes: Add the canned diced tomatoes, Italian seasoning, salt, and pepper to the skillet, mixing well. Let it simmer for five minutes.
6. Combine Cheeses: In a separate bowl, mix ricotta cheese with a pinch of salt and pepper.
7. Layer Ingredients: In a greased 9×13 inch baking dish, layer half of the beef and zucchini mixture, half of the ricotta mixture, and half of the mozzarella cheese. Repeat the layering with the remaining ingredients.
8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 20 minutes.
9. Add Cheese: Remove foil and sprinkle additional mozzarella on top. Bake for another 10-15 minutes until the cheese is melted and bubbly.
10. Cool: Remove from the oven and let it sit for 5-10 minutes before serving.

These steps will provide you with a delicious, comforting Ground Beef and Zucchini Casserole that your whole family will adore.