4 tablespoons butter
4 tablespoons flour
3 cups whole milk
Salt and pepper
2 tablespoon butter
1 yellow onion, sliced thinly I used a mandolin)
6 Yukon Gold Potatoes thinly sliced (I used a mandolin)
1 cup cubed ham
3 cups grated cheddar cheese (I used a mix of Monterrey Jack and Sharp Cheddar)
1/2 tsp Cayenne or more
Preheat oven to 350 degrees. Butter a baking dish.
In a saucepan, melt 4 tablespoons butter over medium high heat. Stir in flour and cook for 1 minute. Remove saucepan from heat and whisk in milk.
Return pan to heat and bring to a simmer while stirring. When sauce has thickened remove from heat, season with salt, pepper and cayenne and set aside.
Bake for an hour or until golden and bubbly.