Cheesy Jalapeno and Bacon Potato Au Gratin

Preheat oven to 350ºF. Spray a 2-quart baking dish with cooking spray or butter.

In a saucepan over medium low heat, add butter and whisk until melted. Whisk in flour until thick, about 1 minute. Slowly add milk and whisk until thick, about 3 minutes. Stir in cheese and whisk until melted.

In prepared baking dish, layer half of potatoes. Evenly distribute onion, jalapeno and bacon. Sprinkle with ground pepper. Pour half of cheese mixture over top. Layer remaining potatoes over top and pour remaining cheese sauce. Sprinkle with salt.

Cover baking dish with aluminum foil and bake for 60 minutes. Uncover and bake for another 20 minutes, until cheese is bubbly.