Ingredients
- 1 large red onion
- 1 tablespoon(s) olive oil
- Salt
- Pepper
- 1.5 pound(s) (about 3 medium) baking potatoes
- 12 ounce(s) (about 1 medium) sweet potato
- 5 ounce(s) Gruyère cheese, shredded (1 1/2 cup)
- 1 cup(s) half-and-half
- 2 teaspoon(s) cornstarch
- 1 tablespoon(s) margarine or butter
Description
What's Better Than Potato Gratin? Two Potato Gratin! This Dish Calls For Not Only Yellow Potatoes, But Also Sweet Potatoes!
Delish
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