Heat the oven to 375°F. Brown the beef in a skillet over medium heat, then drain any extra grease.

Stir in the taco seasoning, beans, and salsa. Simmer for 3 minutes so everything gets cozy.

Layer half the tortilla strips, beef mixture, sour cream, and cheese in a greased 8-inch baking dish. Repeat the layers.

Cover with foil and bake for 20 minutes. Remove the foil and bake for 5 more minutes, until the cheese melts. Add green onions before serving.