Heat olive oil in a large skillet over medium heat.
Add onion and cook for 5 minutes or until onions are translucent and tender. Stir in garlic, cook for 1 minute more.
Add ground beef to skillet and cook until no longer pink about 6-8 minutes. Drain fat.
Stir Mild BBQ Rub, Tequila Lime BBQ Rub, all but 1/4 cup of black beans, 1 1/2 cups cherry tomatoes, and corn.
In a cast iron skillet or baking dish, spread out 4 tortillas on bottom of skillet.
Spread 1/3 of beef mixture over tortillas. Add a 1/3 of cheeses on top of beef mixture, then repeat with another layer of tortillas, beef, and cheese. Then top again with tortillas, beef mixture, and cheese.
Top with crushed tortilla chips, remaining beans and cheese.
Bake uncovered for 15-20 minutes or until cheese is golden and bubbly.
Garnish with remaining tomatoes, green onion, and cilantro. Serve with sour cream. Enjoy