Crockpot lentil rice stuffed peppers

I am trying lentil rice stuffed peppers in my crockpot today. I had some red lentils I wanted to use up so I cooked them. So there were about 2 cups cooked lentils and I added 1 cup cooked rice, 1 small can tomato sauce, 1 egg, some leftover shredded cheese (somewhere between 1/2 and 1 cup - let's say 3/4), 2 TBSP minced onion flakes (dried), 1 tsp salt, 1/4 tsp pepper, about 1 TBSP homemade taco seasoning. Stuffed it into 5 peppers which had the tops cut off and the seeds removed. Put in crockpot for 6 hours on high.