Preheat oven to 400 degrees F.
In a large skillet heat 1 tablespoon olive oil over medium heat.
Add onion and ground meat and sauté until the meat is browned and the onions are tender, about 5-10 minutes. Drain any excess fat.
Meanwhile, as the meat cooks, prep the bell peppers but cutting the top off the pepper. Cut the pepper in half from top to bottom, lengthwise to create halves that you can fill with the mixture.
Pour 1 cup salsa into a large casserole dish.
Arrange the pepper halves in the dish and season each lightly with salt and black pepper.
To the meat mixture stir in 1 can black beans rinsed and drained, 2 cups cooked rice, taco seasoning and 2/3 cup water.
Simmer for about 5 minutes more.
Divide meat mixture among the 8 bell pepper halves.
Top each pepper with shredded cheddar cheese.
Cover with foil and bake for 15 minutes
Remove foil and bake for another 10 minutes.
Serve immediately, making sure to spoon some of the salsa from the bottom of the pan over each pepper.
Top with your favorite taco garnishes like sour cream, shredded lettuce, salsa, and guacamole.