Cheesy Layered Potato Dish (Print Version)

# Ingredients:

→ Main Ingredients

01 - 4 pounds Yukon Gold Potatoes, cut into thin 1/8-inch circles
02 - 1 small yellow or white onion, sliced paper-thin
03 - 4 big garlic cloves, finely chopped

→ For the Sauce

04 - 3 tablespoons butter
05 - 1/4 cup all-purpose flour
06 - 1 cup chicken or veggie stock
07 - 2 cups whole milk (or sub half and half)

→ Cheese

08 - 2 cups freshly-shredded sharp cheddar cheese
09 - 1/2 cup freshly-shredded Parmesan cheese, with extra for topping

→ Seasonings

10 - 1 1/2 teaspoons Kosher salt
11 - 1/2 teaspoon black pepper
12 - 2 teaspoons fresh thyme leaves, split in half

# Instructions:

01 - Warm your oven to 400°F and coat a 9x13-inch baking dish with cooking spray
02 - Melt the butter in a big pan over medium-high heat. Toss in onion and cook until soft, about 4-5 minutes. Throw in garlic and cook another 1-2 minutes. Mix in flour and let it cook one more minute
03 - Slowly add stock while whisking constantly. Pour in milk, add salt, pepper, and half the thyme. Let it warm until edges start to thicken, but don't boil it
04 - Put half your potato slices in the dish. Top with half your sauce, add half the cheddar and all Parmesan. Finish with leftover potatoes, sauce, and cheddar
05 - Cover with foil and pop in oven for 30 minutes. Take foil off and bake another 25-30 minutes till potatoes feel soft and top looks golden
06 - Cool a bit on a rack. Sprinkle remaining thyme and some extra Parmesan before you serve it up

# Notes:

01 - Always shred cheese yourself right before you need it - it'll melt way better than the bagged stuff
02 - Give the dish about 10 minutes to sit after baking so the sauce can set up nicely