Preparation Using fork, mash beans in medium bowl. Mix in onion, breadcrumbs, 2 tablespoons salsa, cumin and hot pepper sauce. Season with salt and pepper. Using moistened hands, shape bean mixture into two 3- to 4-inch-diameter patties. Prepare barbecue (medium-high heat) or preheat broiler. Brush barbecue rack with oil. Grill burgers until heated through, about 3 minutes per side. Grill cut sides of buns until lightly toasted, about 1 minute. Transfer burgers to bottom halves of buns. Spoon 1/4 cup salsa over each. Cover with tops of buns.
Preparation Using fork, mash beans in medium bowl. Mix in onion, breadcrumbs, 2 tablespoons salsa, cumin and hot pepper sauce. Season with salt and pepper. Using moistened hands, shape bean mixture into two 3- to 4-inch-diameter patties. Prepare barbecue (medium-high heat) or preheat broiler. Brush barbecue rack with oil. Grill burgers until heated through, about 3 minutes per side. Grill cut sides of buns until lightly toasted, about 1 minute. Transfer burgers to bottom halves of buns. Spoon 1/4 cup salsa over each. Cover with tops of buns.