Step 1

Preheat the oven to 400 degrees F.

Step 2

Place the mushrooms in a microwave-safe bowl, and microwave for 2 1/2 to 3 minutes to soften them. Drain the mushrooms and set aside.

Step 3

Lightly brush one side of each tortilla with the olive oil (optional) and place on a baking sheet, oiled side down.

Step 4

Distribute about half of the each of the cheeses over half of each of the tortillas. Then layer the spinach, then the mushrooms, then the rest of the cheeses, and fold the other tortilla half over top.

Step 5

Bake the tortillas for about 6 minutes, then flip each over and bake for another 6-7 minutes, until the cheese is melted and the outside of the tortillas is brown.