Preheat over to 375ºF.

Place sliced peppers, onions, and garlic cloves in a roasting pan. Drizzle with olive oil and season with salt, pepper, and herbs.

Cover pan with foil, and cook in preheated oven for 20 minutes.

After 20 minutes, add in leftover cooked potatoes, sprinkling with a little extra salt and pepper and your favorite type of cheese.

Re-cover with foil and cook for an additional 5 minutes (or until cheese is melted and potatoes are warm).