Ultimate Cheesy Baked Ziti

Ingredients

• 1 tablespoon dried oregano
• 1 pound ziti pasta
• 8 ounces ricotta cheese
• 2 tablespoons olive oil
• 1/4 teaspoon ground black pepper
• 1 white onion, diced
• 8 ounces cream cheese, softened
• 1 pound ground beef
• 6 ounces tomato paste
• 15 ounces tomato sauce
• 1 tablespoon dried basil
• 1/2 teaspoon salt
• 8 ounces sliced mushrooms
• 1 cup grated parmesan cheese
• 5 cloves garlic, minced
• 28 ounces crushed tomatoes