In a medium bowl, combine refried beans, salsa, chili powder, and garlic powder.
Spread a generous layer of the bean mixture onto each tortilla.
Sprinkle shredded cheese over the beans.
Roll the tortillas tightly, folding in the sides as you go.
Place burritos seam-side down on a baking sheet. Bake at 375°F for 10-15 minutes until heated through.
Serve with sour cream and guacamole, if desired.