Creamy Scalloped Potatoes with Thyme
Ingredients 3 tablespoons + 1 teaspoon butter divided 3 tablespoons flour 1 teaspoon dry mustard 1 teaspoon kosher salt 2 cups milk 1/2 teaspoon black pepper freshly ground 1 tablespoon thyme leaves chopped fresh 2 pounds yukon gold potatoes peeled and thinly sliced crosswise 1 medium onion diced Instructions Preheat oven to 375 degrees. Place … Read more