Meanwhile, place fajita strips in a microwave safe dish and add 1/4 cup water. Defrost the meat approximately 10 minutes in the microwave.
While meat is defrosting, chop off tops of bell peppers and remove seeds.
Drain the meat and toss with taco seasoning. Stuff the mixture in the bell pepper. Place bell peppers in the bottom of a casserole dish.
Cover with foil and bake for 10 minutes. Remove foil and bake 15 more minutes or until bell pepper has slightly softened. Sprinkle with cheese and add salsa as desired.