Onion and Potato Gratin

• 2 tablespoons olive oil
• 3 large Spanish onions, peeled and sliced thinly
• 2 garlic cloves, finely chopped
• salt & freshly ground black pepper
• 4 large potatoes, peeled and sliced thinly
• 3 tablespoons balsamic vinegar
• 1 14 cups heavy cream
• 14 cup fresh flat leaf parsley, finely chopped
• 1 cup gruyere cheese, grated

1. Heat oil in a large saute pan over medium heat.
2. Add the onions and cook slowly until caramelized.
3. Add the garlic and balsamic vinegar and cook for 2 minutes.
4. Preheat oven to 375 degrees F.
5. Butter a 9-inch baking pan a place a layer of potatoes on the bottom and season with salt and pepper.
6. Spoon 1/5 of the onion mixture over the potatoes and top with 1/4 cup of the heavy cream and a tablespoon of parsley.
7. Repeat to make 5 layers.
8. Sprinkle the cheese over the top of the potatoes.
9. Bake for 50 to 60 minutes, or until the potatoes are soft and the cream has been absorbed.

olive oil, spanish onions, garlic, salt, potatoes, balsamic vinegar, heavy cream, flat leaf parsley, gruyere cheese

Taken from www.food.com/recipe/onion-and-potato-gratin-141269 (may not work)