What you need:
- 3-4 yellow potatoes, thinly sliced
- 2 Tbsp butter
- 2 Tbsp flour
- 1 1/2 cup milk, or half and half if you want it creamier
- 1 clove of garlic, minced
- 1 cup shredded sharp cheddar cheese
- salt and pepper to taste
What you do:
Preheat oven to 350 degrees. Butter a casserole dish. I used an 8 inch round deep dish but you could use a 9x9 square as well.
Melt butter over medium to med-high heat. Whisk in flour and let bubble for about 1 minute. Pour in milk or cream slowly, a little at a time, whisking to avoid lumps until all is added. Continue to heat until bubbly. Remove from heat and add 1/2 cup of cheese.
Place a layer of potato slices on the bottom, sprinkle with salt and pepper and pour 1/3 of the sauce over. Repeat 2 more times. Bake for about 25 minutes (or until potatoes are almost tender). If top is browning then place foil over the top. Remove foil and sprinkle remaining cheese on top and bake another 10 minutes.