Name: The Best Au Gratin Potatoes
Prep time: 30 min
Cook time: 1 h 30 min
Total time: 2 h 10 min
Ingredients: 8 medium Russet potatoes, thinly sliced; 1/4 cup Yellow onion, diced; 3 Tbsp Butter; 3 Tbsp Flour; 2 cups Cheddar Cheese, grated; 2 cups Milk; 1/4 tsp Salt; 1/4 tsp White pepper; 1/4 tsp Garlic Powder; 1/4 cup Gruyere cheese, grated (optional); 1/4 cup Chives, chopped (optional)

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The Best Cheesy Potatoes Au gratin Ever

Cheesy Au Gratin Potatoes are a classic side dish for any meal. Great for pot-luck, family meals, or just a regular night. Try this recipe today for a taste of home cooked greatness.

If you are in need of a classic, filling, and delicious side dish, this classic Potatoes Au Gratin recipe will not disappoint! Better than freeze dried boxed mixes and just as easy to put together too!

This is a family favorite for sure! It’s cheesy, melty, and super delicious. It’s also so versatile that you can serve it with almost any meal.

Making Au Gratin Potatoes

Start with the freshest ingredients you can gather to make this delectable dish. Thinly sliced Potatoes and a creamy cheese sauce meld together in the best possible way. Here is what you will need:

Potatoes: Go for some medium sized russets. Pick those that are about an inch and a half to two inches in diameter.

Onions: Finely dice some yellow onion to add some extra flavor to the sauce.

Butter: Real butter makes the cheese sauce rich and flavorful.

Flour: Mixed with the melted butter, this is the basis of the rue for the cheese sauce.

Cheese: Sharp Cheddar cheese makes the sauce extra delightful. Other cheeses can be used as well. Try some Gruyere or Asiago for a twist. In a pinch some Colby jack will melt in for a creamy sauce.

Spices: White pepper, kosher salt and a pinch of garlic powder finish off this classic dish.

Thinly slice 7-8 medium sized potatoes, I use a mandolin slicer for nice even slices. This also helps them cook evenly for a fantastic finished product. Place these in a baking dish to wait for the sauce. Dice up some onions and set aside.

Melt three tablespoons and mix in three tablespoons of flour. Combine into a smooth rue. Slowly stir in the milk making sure to fully combine the rue. Add more milk while stirring until all milk is incorporated.

Add diced onions and spices into the basic white sauce and stir well. Remove from heat and add in cheese. Stir until fully melted.

Pour the cheese sauce onto the potatoes and mix thoroughly. Cover with foil and bake at 350F for 60 minutes.

Storing Extra Potatoes

Remaining Au Gratin Potatoes is easy. Cover them in an airtight container in the refrigerator for up to three days. Reheat entire pan in the oven for 30 minutes at 350F or scoop an individual serving out to warm in the microwave.

Advance Preparation

If you are planning a family gathering or pot luck, you can easily make this ahead of time. Layer in your potatoes and sauce and store covered in the refrigerator overnight. Allow the pan to reach room temperature before baking.

This saves time and you still get a wonderful dinner side dish. Fantastic for those holiday family gatherings!