Savory Beef and Mushroom Stroganoff

Ingredients

• 1/2 teaspoon black pepper
• 1 cup sliced mushrooms
• 4 cups beef stock
• 1 cup sour cream
• 1 tablespoon cornstarch
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1/2 teaspoon salt
• 1 small onion, finely chopped
• 1 pound ground beef
• 3 tablespoons all-purpose flour
• 1/2 cup grated Parmesan cheese
• 1/2 teaspoon smoked paprika
• 3 tablespoons butter
• 3 cloves garlic, minced
• 2 teaspoons Dijon mustard
• 12 ounces pasta, such as egg noodles
• 2 teaspoons Worcestershire sauce