Stuffed Pasta Shells | Eat Wheat

Ingredients

• 1 pound lean ground beef
• 1 medium onion, diced
• 30 ounces part-skim ricotta cheese
• 3.5 cups shredded mozzarella cheese
• 1 cup freshly grated Parmesan cheese
• 4 garlic cloves, minced
• 2 teaspoons salt
• 1 teaspoon black pepper
• 2 teaspoons dried Italian seasoning
• 2 – 24 ounce jars marinara sauce
• 12 ounce box jumbo shells
• 1 tablespoon olive oil