Three Potato Gratin

Total Time: 1 hr 20 mins Preparation Time: 20 mins Cook Time: 1 hr

Ingredients

• Servings: 4
• 4 tablespoons butter
• 4 tablespoons all-purpose flour
• 1/2 cup sour cream
• 2 cups milk
• 3/4 cup parmesan cheese, grated
• 1 cup yukon gold potato, sliced thin
• 1 cup sweet potato, sliced thin
• 1 cup russet potato, sliced thin
• 1 cup cheddar cheese, shredded
• salt and pepper

Recipe

• 1 preheat oven to 350 degrees.
• 2 thoroughly grease 2 quart casserole dish.
• 3 in a saucepan melt the butter and whisk in flour to make a roux. cook for about one minute. add salt, pepper, sour cream and milk. gradually stir over medium heat to keep the mixture from burning. stir until thick, about 2-3 minutes, then add parmesan cheese.
• 4 arrange half of potatoes in casserole dish, making sure they overlap. pour half of the cheese mixture over potatoes, then repeat the process.
• 5 bake covered for 35 to 40 minutes, then uncover and bake additional 15 minutes.
• 6 top with shredded cheddar and cook another 5 - 10 minutes until cheese is melted and bubbly. make sure potatoes are cooked through. test by inserting knife - it it goes in and comes out easily and cleanly casserole is done.