Bring a large pot of salted water to boil. Cook pasta according to package instructions until al dente; drain and set aside.

In a large skillet over medium heat, add olive oil. Sauté chopped onions until translucent and fragrant, then toss in minced garlic until fragrant.

Stir in ground beef or turkey; cook until browned. Add chili powder, salt, pepper, and canned tomatoes while mixing well.

Reduce heat and stir in cooked pasta along with milk and half of the shredded cheese until everything is well incorporated.

Preheat oven to 350°F (175°C). Transfer mixture to an oven-safe dish, sprinkle remaining cheese on top, then bake until bubbly.