Preheat oven to 350F degrees.

In a large skillet brown the ground beef and onion until the beef is cooked through, about 6 minutes. Drain off excess oil. Stir in the salt, chili powder, garlic powder, onion powder, and salt. Add a ¼ cup of water. Simmer for 5 minutes or until water has evaporated.

While the beef is cooking, heat the refried beans in the microwave for 2 minutes, stirring halfway through.

Line two baking sheets with foil. Spread the tortilla chips out on the foil. Top with the beans, beef, and queso. Bake for 5 to 10 minutes.

Garnish with tomatoes, green onions, and sour cream.

In a saucepan, heat evaporated milk over medium heat until it comes to a simmer. While the milk is warming combine cheese and cornstarch. Remove the pan from the heat and stir in the cheese 1 cup at a time until all the cheese has been incorporated and it has completely melted into the sauce. Stir in the hot sauce, chili powder, and salt.