1

Preheat oven to 400 degrees. Spray 2-quart baking dish with cooking spray. Set aside.

2

In a large skillet, heat oil over medium-high heat. Add onions and mushrooms and cook, stirring often, until browned (about 7 minutes).

3

Reduce heat to medium and add garlic and chili powder, stir for 1 minute.

4

Add black beans and spinach and stir to combine. Cook until beans are warmed through (about 2 minutes). Remove from heat.

5

Arrange 5 tortilla halves in baking dish. Top with half of the bean mixture and 1/2 cup salsa, then sprinkle with 1/3 of the cheese. Repeat with another layer of bean mixture, salsa and cheese. Top with remaining tortilla halves, salsa and cheese.

6

Cover with foil and bake 10 minutes or until center is hot and cheese melts. Uncover and bake until cheese is bubbling, 5 minutes OR if your dish is broiler-safe, put under the broiler until cheese is bubbling and browned.