Whip up our easy beef chili in advance, and you can get this giant pan of nachos on the table in just 20 minutes. It's all about layering the meat with tortilla chips, cheese, and beans.
Preheat oven to 425 degrees, with rack in upper third.
Spread 5 cups chips in a 12-inch heavy-bottomed skillet (preferably cast iron). Top with 1 cup chili, then half the beans and 1 cup cheese. Layer with remaining 5 cups chips, 1 cup chili, remaining beans, and 1 cup cheese.
Bake until cheese is melted and bubbly, 5 to 7 minutes. Top with radishes, jalapenos, and cilantro; serve with sour cream, salsa, and avocado.