Simple don't heat up the kitchen grilled new potatoes

I tried these last night - kind of thrown together after looking up a few simple recipes. Served with grilled zucchini and chuck steak (which I bought for under $2/pound with ACME's new "pick five" deal).

Ingredients:

bag of new potatoes (about two pounds?)
1 small onion
8 cubes of Trader Joes frozen chopped garlic
a few spoonfuls of romano cheese
a few tablespoons olive oil
kosher or flake salt
fresh ground pepper
thyme (dried or chopped from the garden)

Preheat your grill to medium heat.

• Wash and quarter the potatoes
• slice the onion in half and then in thin "half moons"
• mix potatoes, olive oil, cheese and spices in a large bowl
• split potatoes between two large sheets of aluminum foil, and make a flat "packet" of each
• grill for 10 minutes per side