Blanche Bell Peppers for 5 mins or until they have a slight give.
Add to cooked ground beef - saute onions with olive oil until almost translucent and add mushrooms for 10 mins until cooked down
Combine yogurt, taco seasoning, black beans, to the cooked rice
Combine ground beef, and onions if you have room or use a seperate pan.
Cut tops and bottoms from bell peppers; remove membrane and seeds. Cut peppers in half to create 2 pieces that can be laid down. Dice up the top and bottom of the peppers.
Layer rice & meat mixture and green peppers. Repeat
Bake for 10 minutes and finish with a broil until the top has a crisp.