Cheesy Nachos with Steak and Black Beans

Ingredients

• 1 tablespoon extra-virgin olive oil
• 1 tablespoon minced garlic
• 1 teaspoon pure chile powder
• 1 teaspoon packed light brown sugar
• 1/2 teaspoon kosher salt
• 1/2 teaspoon chipotle chile powder
• 1/4 teaspoon ground cumin
• 1 1/2 pounds skirt steak,1/2 to 3/4 inch thick, trimmed of excess surface fat, cut with the grain into 12-inch- long pieces
• 1 bag (12 ounces) tortilla chips
• 1 can (15 ounces) black beans, rinsed and drained
• 2 cups shredded sharp cheddar cheese (8 ounces)
• 2 cups shredded Monterey Jack cheese (8 ounces)
• Tomato-Avocado Salsa