Use block cream cheese (not the tub kind) and let it soften at room temperature first so the filling mixes up smooth and stays thick. There is no need to pre-cook the mini peppers since they soften in the oven. Fill each pepper level with the cut edge to keep the cheese from spilling. Watch closely during the 2-minute broil, as the tops brown fast. Store leftovers in the fridge for up to 3 days. Freezing is not recommended since the peppers get watery.