Heat oil in a large nonstick pot or pan over medium-high heat.
Add onions, garlic and saute until garlic is fragrant and onions are softened are translucent.
Add salsa, shredded turkey, taco seasoning, salt, pepper and mix until combined.
Cook for about 3-5 minutes or until shredded meat is warmed through.
Turn off heat and mix in lemon juice.
Garnish with cilantro and transfer to a plate and keep aside.
Clean the pan and heat about 1 tsp butter on medium heat.
Place a tortilla on top of the melted butter.
Sprinkle some cheddar cheese, followed by shredded turkey and vegetable fajitas (or peppers) and finally followed by some more cheddar cheese.
Cover and cook for about 1 minute to speed up the "cheese melting" process.
Remove lid and use a spatula to fold one side of the tortilla to the other side.
Press down the top with a spatula until both sides stick together. The melted cheese works like glue.
Cook both sides (uncovered) until crispy.
Transfer to a cutting board and cut in half.
Do the same with remaining tortillas and Enjoy!