Slice and deseed peppers, and place in a baking tray.
Bake in the Sharp Superheated Steam Countertop Oven for 15 minutes at 425º F. If using a conventional oven, preheat the oven to 425º F and bake the peppers for 22 minutes.
Prepare the stuffing by first adding olive oil to a skillet over medium high heat.
Saute minced onions, garlic and celery for about 10 minutes until softened. Add the spices and salt, and then the ground meat. Break up the meat as it cooks, and simmer until the meat has evenly browned.
Add the tomato sauce, olives, and kale, and allow to simmer together for another 2-3 minutes.
Add the stuffing to each pepper halve. Top each stuffed pepper with a slice of cheddar cheese.
Return to the Sharp Superheated Steam Countertop Oven to Bake/Reheat at 425º F for 15 minutes, or until the filling is bubbly and the cheddar is melted.
If baking in a conventional oven, return to oven for 20-25 minutes.
If making these in advance, stuff the peppers and top with cheddar, and then wrap and refrigerate until ready to bake. Since the mixture will be cold, up the baking time by 5 minutes in the Sharp Superheated Steam Countertop Oven, or 8-10 minutes in a conventional oven.