- Heat oven to 400°. Grease pie plate, 10”x 1 ½ “. 
- Heat beans in 1 inch salted water to boiling. 
- Cook uncovered 5 minutes. 
- Cover and cook until tender, 5 – 10 minutes, drain. 
- Mix beans, mushrooms, onion, garlic and cheese in plate. 
- Beat remaining ingredients until smooth, 15 seconds in blender on high. 
- Pour into plate. 
- Bake until knife inserted between center and edge comes out clean, 30 – 35 minutes. 
- Cool 5 minutes.