Cheesy Beef & Pasta Shells

Ingredients

• 1 tablespoon olive oil
• 1 1/2 cups cheddar cheese, shredded
• 1 cup beef stock
• 1 pound ground beef
• 1/4 cup sour cream
• Salt and pepper to taste
• 3/4 cup heavy cream
• 2 tablespoons all-purpose flour
• 1/2 teaspoon smoked paprika
• 1 small sweet onion, diced
• 1 teaspoon dried parsley
• 1 cup marinara sauce
• 1/2 teaspoon dried oregano
• 5 cloves garlic, minced
• 1 teaspoon Italian seasoning
• 8 ounces medium pasta shells