Potatoes Au Gratin

Step 1

Preheat the oven: Preheat the oven to 350°F. Lightly spray a 9x13-inch casserole dish with cooking spray.

Step 2

Sauté onion and garlic: In a medium size skillet, melt the butter over medium low heat. Add the onion and garlic and cook for about 3 minutes until softened. Sprinkle the flour over the onion and garlic and stir. Cook for 2 more minutes.

Step 3

Make the sauce: Slowly add the chicken broth and milk while continuously whisking to thicken. Whisk until smooth. Bring to a boil over medium heat while continuing to whisk. Season with salt and pepper.

Step 4

Layer the ingredients: Layer about a pound of the potato slices on the bottom of the prepared casserole dish. Top evenly with ⅓ of the sauce and about ½ cup of cheddar cheese. Repeat with another layer of potatoes, ⅓ of the sauce, and ½ cup of cheddar, the rest of the potatoes, remaining sauce, remaining cheese and finally the Parmesan cheese.

Step 5

Bake: Cover the casserole dish with aluminum foil and bake for about 45 minutes. Remove the aluminum foil and bake for an additional 45 minutes or until golden brown and the potatoes are fork tender. If needed, broil for a couple minutes until golden brown to your preference.

Step 6

Garnish and serve: Garnish with fresh chopped thyme and serve with your favorite meat dish.