01 - Preheat oven to 350°F (175°C). Properly grease a 12-cup muffin tin or line with silicone cupcake liners.
02 - Prepare elbow macaroni according to package directions to achieve an al dente texture. Thoroughly drain and permit to cool slightly.
03 - In a large mixing bowl, vigorously whisk together the large eggs, milk, salt, black pepper, and smoked paprika, if using.
04 - Introduce the cooled macaroni, shredded cheddar cheese, shredded mozzarella cheese, and any chosen add-ins to the whisked egg mixture. Stir until all components are uniformly incorporated.
05 - Distribute the combined mixture evenly into the prepared muffin cups, ensuring each cup is approximately three-quarters full.
06 - Bake for a duration of 20 to 25 minutes, or until the muffins are visibly puffed and firm to the touch in the center.
07 - Allow the muffins to cool in the tin for 5 minutes before carefully removing them. Serve warm.