Stuffed Italian Shells | Command Cooking

Ingredients

• 20 jumbo pasta shells
• 1 pound ground chuck
• 1 tablespoon olive oil
• 1 small yellow onion, diced
• 1 clove garlic, minced
• 1 (26-ounce) jar marinara sauce
• 1 large egg, lightly beaten
• 2 cups small curd cottage cheese
• 2 cups mozzarella cheese, shredded, divided
• 3/4 cup parmesan cheese, grated, divided
• fresh basil leaves, to taste, chopped, for garnish