Magic Mac and Cheese

Bahan-bahan (6 porsi)

• 1 cup cottage cheese, small curd, not fat-free
• 1/4 cup sour cream
• 1 large egg
• 2 cups milk (2% or whole milk)
• 1 tablespoon dried onion flakes
• 1 teaspoon kosher salt
• 1 teaspoon ground mustard
• 1 teaspoon garlic powder
• 1/4 teaspoon white pepper
• 1/8 teaspoon cayenne pepper
• 2 tablespoons butter, divided
• 8 ounces uncooked (dry) large elbow macaroni
• 1 cup shredded cheddar cheese, plus more to top
• 1 cup shredded mozzarella cheese, plus more to top
• 1 cup shredded smoked gouda cheese, plus more to top
• 1 cup shredded muenster cheese, plus more to top
• 1/3 cup panko breadcrumbs
• Paprika or smoked paprika, as desired