Smoked Chili Sweet Potato Gratin



2 cups heavy cream
1/2 teaspoon McCormick Ground Cumin
1/2 teaspoon McCormick Garlic Powder
3/4 teaspoon McCormick Chipotle Chili Powder, divided
5 medium sized sweet potatoes, peeled and thinly sliced
salt and pepper
8 ounces gruyere, grated
1 cup panko bread crumbs
1 tablespoon McCormick Parsley Flakes
2 tablespoons melted butter