Creamy Potato and Parsnip Gratin

Ingredients

 * 8 	 	potatoes
 * 8 		Parsnips
 * 1 		clove garlic, halved
 * 1 	tsp 	thyme
 * salt and pepper
 * 2 	cup 	Approx. whipping cream

Directions
Peel and thinly slice potatoes and parsnips. Generously butter 13x9 inch casserole dish; rub with garlic. Arrange single layer of potatoes in dish. Sprinkle lightly with a little of the thyme, salt and pepper. Cover with layer of parsnips. Sprinkle with seasonings. Repeat layer with remaining vegetables. Pour in enough cream to come three-quarters up side of dish. Place on baking sheet and bake, covered, in 375°F oven for 30 minutes. Uncover and bake for 30 minutes longer or until top is brown and crusty and potatoes are cooked through.