# What You'll Need:
→ Mac and Cheese
01 - 7 oz elbow macaroni
02 - 2 cups whole milk
03 - 2 tablespoons unsalted butter
04 - 2 tablespoons all-purpose flour
05 - 1 1/2 cups shredded cheddar cheese
06 - 1/2 cup shredded mozzarella cheese
07 - 1/2 teaspoon Dijon mustard
08 - 1/2 teaspoon salt
09 - 1/4 teaspoon ground black pepper
→ Onion Rings
10 - 2 large yellow onions
11 - Salt, to taste
→ Breading and Frying
12 - 1 cup all-purpose flour
13 - 2 large eggs
14 - 2 tablespoons milk
15 - 2 cups panko breadcrumbs
16 - 1/2 teaspoon paprika
17 - Oil, for deep frying
# Method Steps:
01 - Boil elbow macaroni in a large pot of salted water following package directions. Drain thoroughly and set aside.
02 - In a saucepan over medium heat, melt butter. Add flour, stirring constantly, and cook for 1 minute. Gradually whisk in milk until smooth. Bring to a simmer, stirring frequently until thickened, about 3 to 4 minutes.
03 - Remove saucepan from heat; stir in cheddar, mozzarella, Dijon mustard, salt, and black pepper until the cheeses melt and the sauce is smooth. Fold in the cooked macaroni. Cool to room temperature, then refrigerate the mixture until firm, about 20 minutes.
04 - Peel onions and slice into 1/2-inch thick rings. Separate into large, sturdy rings suitable for stuffing; reserve smaller pieces for other uses.
05 - Gently fill each onion ring with a portion of the firm mac and cheese mixture, pressing to level the surface. Arrange on a parchment-lined baking tray and freeze for at least 30 minutes until solid.
06 - Place flour in one bowl. In a second bowl, whisk eggs with 2 tablespoons milk. In a third, mix panko breadcrumbs with paprika.
07 - Dust each stuffed ring in flour, dip in the egg mixture, then coat thoroughly with the seasoned panko. Press breadcrumbs gently for even coverage.
08 - Heat oil in a deep fryer or large heavy pot to 350°F. Fry the stuffed rings in batches for 2 to 3 minutes per side, until golden and crisp. Use a slotted spoon to transfer them to paper towels. Season lightly with salt.
09 - Serve hot with accompanying dipping sauces as desired.