While the turkey and sauce are cooking you can prepare the peppers: Cut off the tops of the peppers and remove the ribs and seeds. Rinse out extra seeds and place each pepper next to each other in a greased 2 quart baking dish.
Feel free to use quinoa instead of brown rice. If it's easier, you can buy pre cooked frozen brown rice.
Peppers can be prepped ahead and baked later, just follow instructions up to baking them in step 6. Keep them in the fridge until you're ready to bake them!
Peppers are freezer friendly; just bake them, cool and freeze for a later meal.