1 lb. ground beef
1 1/4 oz. pkg. mild taco seasoning mix
4 sandwich buns
4 tomato slices
1 c. chopped lettuce
2 tbsp. mild salsa
Sour cream or guacamole if desired

In medium bowl, combine ground beef, salsa and seasoning mix; mix well. Shape into 4 patties. Place on microwave-safe roasting rack; cover with waxed paper. Microwave on high for 5 to 7 minutes or until of desired doneness, turning and rearranging after 3 minutes. Let stand 2 to 3 minutes. Serve on the bun with the tomatoes and lettuce and top with sour cream and/or guacamole.