Sweet Potato Enchiladas

2 sweet potatoes
1 red bell pepper
2 garlic cloves
1/2 onion
2 tablespoons butter
1 teaspoon olive oil
1 can black beans
2 cups cooked rice
2 cups shredded cheese
tortillas

Place butter and olive oil in a medium saute pan over medium heat. Add the sliced onion, season with salt and peopper to taste and saute for 10 minutes or until the onions are limp. Reduce heat to low and cook onions for another 10 minutes or until they have broken down completely and are caramelized. Add the garlic cloves and bell pepper.

Mix the rice, sweet potatoes and black beans together. Layer in tortillas: rice/sweet potatoes/black bean mixture, caramelized onions, cheese. Put in a casserole dish and cook at 350 for 20 minutes.