Dad’s Creamy & Cheesy Au Gratin Potatoes | Bushwick Potato

Ingredients

• 6-7 medium yukon gold potatoes, thinly sliced into 1/8th inch rounds (3 pounds gold potatoes — by weight is a more accurate measure)
• ½ white or yellow onion, cut into slices
• 2 tablespoons salted butter
• ¼ cup all purpose flour (whole wheat, all purpose, or gluten free 1:1 flour will all work)
• 1 1/2 cups unsweetened almond milk (regular, skim or whole milk will also work)
• 8 ounces sharp cheddar cheese (2 heaping cups shredded cheddar cheese)
• ½ teaspoon garlic powder
• ¾ teaspoon salt, plus more to taste
• Freshly ground black pepper
• 1/2 cup gruyere cheese (or sub more sharp cheddar)
• ¼ cup grated parmesan
• Fresh chopped parsley