Oatmeal Lace Cookies Recipe

Ingredients

• 1/2 cup (115 g or 1 stick) unsalted butter
• 1 cup (220 g) packed dark brown sugar
• 2 tablespoons all-purpose flour
• 2 teaspoons vanilla extract
• 1/2 teaspoon kosher salt
• 1 large egg
• 1 1/2 cups (170 g) thick-cut rolled oats (or substitute regular rolled oats)