01 -
Cook the pasta in a large pot of boiling salted water until al dente. Drain and rinse under cold water to stop cooking. Set aside.
02 -
In a large oven-safe skillet, cook the ground beef over medium-high heat until browned. Drain any excess fat and add diced onion, minced garlic, and taco seasoning. Sauté for 2–3 minutes until fragrant, then transfer the mixture to a bowl and set aside.
03 -
In the same skillet, melt butter over medium heat. Whisk in flour to create a roux and cook for 1 minute. Gradually add whole milk, whisking to avoid lumps. Simmer until thickened, then reduce heat and stir in freshly grated cheddar and Colby Jack cheese until fully melted and smooth.
04 -
Return the seasoned beef mixture to the skillet. Add cooked pasta and drained pinto beans. Gently fold to combine, ensuring every ingredient is coated in the cheese sauce.
05 -
Scatter additional grated cheese over the surface. Place skillet under preheated broiler for 2–3 minutes until the cheese is golden and bubbling.
06 -
Remove from oven and let stand briefly before serving. Garnish with desired toppings such as diced avocado, fresh salsa, sour cream, chopped cilantro, or sliced jalapeños.