How to Cook Delicious Au Gratin Potatoes

Au Gratin Potatoes.

Au Gratin Potatoes highly diverse and own ideal taste that unique. Few kinds of Au Gratin Potatoes recipes are also sufficient simple to process and dont take lengthy. Although not everyone likes Au Gratin Potatoes food, now some people are get attached and like the various Au Gratin Potatoes foods available. This can be seen of the number of restaurants that prepare Au Gratin Potatoes as one of the serving. You can have Au Gratin Potatoes using 9 ingredients and 8 steps. Here is how you cook that.

Ingredients of Au Gratin Potatoes

1. Prepare 4 of Russet Potatoes cut apx. 1/4 in thick.
2. You need 1 of yellow onion slices into half rings.
3. Prepare 1/2 stick of butter.
4. You need 1/2 tsp of salt.
5. It's 1 tsp of garlic powder.
6. You need 3 TBS of flower.
7. Prepare 2 cups of milk.
8. It's 1 of small bag shredded triple cheddar cheese.
9. You need 1 cup of parmesan cheese.

Au Gratin Potatoes instructions

1. Preheat oven to 400 degrees F and butter a 9×13 glass baking dish..
2. In a medium-size pot, melt butter over medium heat. Mix in the flour, garlic powder, and salt. Stir constantly for one minute..
3. Stir in milk. Cook until mixture has thickened..
4. Stir in cheese all at once, and continue stirring until melted, about 30 to 60 seconds..
5. Layer 1/2 of the potatoes into bottom of the prepared casserole dish and top with the onion slices. Then pour half the cheese mixture on top..
6. Repeat step 5 with remaining potatoes, onions, and cheese mixture..
7. Cover with aluminum foil and place in oven for 1 hour. Remove foil and bake for an additional 30 minutes. (Or longer if you desire a crisper finish.).
8. Set aside to rest for 15 min then it's ready to serve..

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