If you're cooking for one, it really doesn't make sense to heat up your big oven just to roast some garlic cloves. You can do this directly in your toaster oven with just a few easy steps. Best of all, there's no preheating your oven!
It's very important that you don't use the rack that comes with the toast oven, but rather the baking/broiling pan. Since the packets have oil, you don't want that accidentally spilling in your oven or it might start a fire.
Place garlic cloves in the middle of aluminum foil, making sure they are in a single layer.
Drizzle with olive oil and salt.
Fold up making sure all sides are secure and tight. It should be a flat packet.
Place on toaster ovens baking/broiling pan on lower or middle rack.
Set temp at 350 degrees and timer for 30 minutes.
After timer goes off, let sit in oven for 10 minutes.