Instructions
Cook time: 28 minutes
Preheat oven to 425°; roughly chop onion/pepper mix into bite-size pieces + thinly slice sirloin against grain
Place 2 large pieces of foil on a sheet pan + oil the foil; divide beef + pepper mix into the center of each piece of foil, season with half the seasoning packet + top each with 1-2 slices of cheese
Bring the long edges of foil together + roll to seal, leaving 1-inch of space above ingredients; repeat with side ends of foil—your pack is sealed!
Bake 25-27 min—mmm that smells good!

