Warm tortillas according to package directions.
Heat oil in a large nonstick skillet coated with cooking spray over medium-high heat. Add mushrooms; sauté 8 minutes or until lightly browned. Sprinkle with salt and hot sauce.
Spoon 1/4 cup refried beans down center of each tortilla. Top each with 1/4 cup mushrooms and 2 tablespoons cheese. Roll up tortilla. Serve over lettuce. Top with tomato, salsa, and sour cream.