2 low fat whole wheat tortillas, not burrito size!
salsa
Method
In a medium skillet, heat butter and 1/2 tsp olive oil over medium heat. When hot, add onions and a pinch of salt, stir to coat.
Continue to cook, stirring occasionally to avoid burning, for 20 minutes.
After 12 minutes of cooking the onions, heat 1/2 tsp olive oil in another skillet over medium-high heat. Add mushrooms, oregano, garlic powder and a few pinches of salt and pepper. Toss to coat. Cook for 5-8 minutes, until cooked through and tender.
To assemble, heat tortillas in microwave for 20-30 seconds, or until they jsut start to puff. Spoon feta, onions, mushrooms and spinach into each one. Wrap tightly and cut in half.