Dubliner Au Graten Potatoes

Ingredients:

8 medium sized potatoes (I used Yukon Gold)
4 cups Dubliner cheese, grated
1/4 cup butter
2 1/2 Tbsp Wondra flour
2 cups milk
1/2 tsp. garlic powder
1 Tbsp. chopped, dehydrated onions

Direction:

1. Preheat oven to 350 degrees. Grease an 11 x 15 glass casserole pan.
2. Bring a large pot of water to a boil.
3. Peel and rinse, then thinly slice the potatoes (1/4 in thick).
4. In a large saucepan, melt butter over medium-low heat. Once melted, add flour while stirring to combine.
5. Increase stove temperature to medium and add the milk, onions, and garlic powder. Stir constantly until slightly thickened.
6. Add 2 cups of grated cheese and stir until cheese is completely melted.
7. Once potatoes are cooked (firm but not crunchy) put them into prepared casserole dish.
8. Pour sauce over potatoes and gently mix to coat.
9. Sprinkle remain grated cheese over potatoes. Place in oven and bake until sauce is bubbly and cheese is slightly brown.