Ultimate Stuffed Shells Grandmas Secret Recipe with Ground

Ingredients

• 2 tablespoons olive oil (30 ml)
• 1 medium yellow onion, finely chopped (approx. 1 cup)
• 2 cloves garlic, minced
• 1 (28 ounce) can crushed tomatoes (794 g)
• 1 (15 ounce) can tomato sauce (425 g)
• 1 (6 ounce) can tomato paste (170 g)
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon dried thyme
• 1/4 teaspoon red pepper flakes (optional)
• 1 teaspoon granulated sugar
• Salt and freshly ground black pepper to taste
• 1 tablespoon olive oil (15 ml)
• 1 pound ground beef (454 g), 80/20 blend recommended
• 1/2 cup yellow onion, finely chopped
• 1 teaspoon Italian seasoning
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 (15 ounce) container ricotta cheese (425 g), whole milk recommended
• 1 large egg, lightly beaten
• 1/2 cup grated Parmesan cheese (50 g), plus more for topping
• 1/4 cup chopped fresh parsley
• 1 (12 ounce) box jumbo pasta shells (340 g)
• 2 cups shredded mozzarella cheese (226 g)