Cheesy Ground Beef and Zucchini Casserole

Ingredients

• 1 pound ground beef
• 2 medium zucchinis, sliced
• 1 cup shredded cheddar cheese
• 1/2 cup grated Parmesan cheese
• 1 small onion, chopped
• 2 cloves garlic, minced
• 1 can (14.5 ounces) diced tomatoes, drained
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• Salt
• pepper
• 1 tablespoon olive oil
• 1 cup cooked rice (optional)
• 1/2 teaspoon red pepper flakes (optional for a bit of heat)