These Fajita Quesadillas are filled with seasoned veggies and lots of cheese. Serve them with all of your favorite fajita toppings. A quick dinner for any night of the week.
Heat oil in a large skillet. Add the bell peppers, onions, and fajita seasoning mix. Cook for 4-5 minutes or until vegetables are tender. Remove vegetables from the pan and set aside.
Melt the butter in a large skillet. Place one tortilla in the pan and add 1/4 of the vegetable mixture and sprinkle on 1/2 cup of cheese. Top with another tortilla.
Cook quesadillas 5-6 minutes per side or until tortillas are golden brown and the cheese has melted. Repeat with remaining tortillas, adding more butter if necessary.
Cut each quesadilla into 4 slices and top with desired toppings.