Ingredients
Serves: 6-8
3 tablespoons olive oil, plus more to coat baking dish
2 large onions, halved and thinly sliced
8 cloves garlic, thinly sliced
2 teaspoons chopped fresh thyme, divided
salt and freshly ground black pepper, to taste
1 cup grated Gruyere cheese, divided
3/4 pound (2 medium) zucchini
5 large plum tomatoes
1 pound baby red or Yukon gold potatoes
Preparation
