"These quesadillas are a fast, easy way to make a delicious snack or dinner...."
plus 1 tsp olive oil, divided
all-purpose flour
chili powder
chicken stock
red bell pepper, chopped
sliced mushrooms
shredded cooked chicken breasts (about 1 1/4 cups)
shredded sharp Cheddar cheese (about 1 1/2 cups)
large flour tortillas
Salsa, sour cream, fresh cilantro, lime wedges, and sliced avocado, for garnish