01 -
Brown and crumble ground beef in a skillet over medium-high heat, then drain excess grease.
02 -
Transfer beef to slow cooker, add refried beans, enchilada sauce, taco seasoning, and salsa; stir thoroughly.
03 -
Cover and cook on low setting for 4 hours in slow cooker.
04 -
Spoon filling onto hamburger buns and garnish with preferred toppings.