Grandma's Potato, Red Pepper, and Zucchini Gratin

Yield:	4 Servings
Categories:	Inn, Potato, Tavern

1		Clove garlic, peeled and halved
4	tb	Extra-virgin olive oil
2	lb	Russet potatoes, sliced very thinly
2	ts	Fresh thyme
2	ts	Salt
2		Red bell pepper, thinly sliced
4	sm	Zucchini, very thinly sliced