Vegeterian Quesadillas

This is a quick but healthy way to make quesadillas. It's suitable for vegetarians also, and is great served with salsa or guacamola as an appetizer, snack or quick meal.

Ingredients
1/2 cup chopped red bell pepper
1/2 cup chopped zucchini
1/2 cup chopped yellow squash
1/2 cup chopped red onion
1/2 cup chopped mushrooms
1 tablespoon olive oil
cooking spray
6 (9 inch) whole wheat tortillas
1 1/4 cups shredded Cheddar cheese

Directions
1. In a large non-stick pan, cook the red pepper, zucchini, yellow squash, onion, and mushrooms in olive oil over a medium to medium-high heat for about 7 minutes, or until just tender.
2. Remove vegetables from pan, and then coat it with cooking spray, and place one tortilla in pan. Sprinkle 1/4 cup of cheese evenly over tortilla, and layer 3/4 cup of the vegetable mixture over the cheese. Sprinkle another 1/8 cup of cheese on the vegetables, and top with a second tortilla.
2. Cook until golden on both sides, for approximately 2 to 3 minutes per side. Remove quesadilla from pan, and repeat with remaining ingredients. Cut each quesadilla into 8 triangles. Serve hot.