Easy Stuffed Taco Shells

Ingredients

• ***For the shells:***
• 24 jumbo pasta shells
• 1 tablespoon olive oil
• 1/2 medium onion, chopped
• 2 cloves garlic, minced
• 1 pound extra-lean ground beef
• 1 tablespoon chili powder
• 1 teaspoon smoked paprika
• 1 teaspoon ground cumin
• 1 (14.5-ounce) jar salsa
• 1/2 cup sour cream
• 1 1/2 cups Mexican cheese blend, shredded, divided
• salt, to taste
• black pepper, to taste
• ***Optional, for topping:***
• cilantro, to taste, chopped
• avocado, to taste, sliced or diced
• scallions, to taste, chopped
• tomatoes, to taste, chopped
• sour cream, to taste