Microwave Simply Spuds™ Steamables™ in their bag according to directions. Use caution when removing the bag from the microwave; package will be HOT! Carefully cut the bag open and pour the potatoes onto a serving plate.
Crumble ground beef into 1 quart glass casserole dish; add chopped onion.
Microware uncovered 3-1/2 minutes or until meat is set, stirring once. Drain. Stir in taco seasoning and half of the water specified on the seasoning packet. Cover with casserole lid.
Microwave 3 minutes or until heated through, stirring once.
Make a crosswise slash in each potato; press sides of potato to form an opening. Sprinkle with salt. Spoon filling into potatoes.
Top each potato with sour cream and/or cheese. Serve and enjoy!