Lace cookies are delicate, crisp cookies filled with chewy oats and buttery toffee flavor. This classic cookie gets its name from its thin, lacy appearance.
Preheat oven to 350℉. Line a baking sheet with parchment paper or foil and set aside.
In a bowl, add quick cook oats, sugar, flour, and salt. Stir to combine.
Add egg, melted butter, and vanilla extract and stir to incorporate.
Drop by teaspoonful onto prepared baking sheet about 3 inches apart (cookies will spread a lot as they bake).
Bake for about 6-8 minutes, or until cookies look golden brown across the tops.
Allow cookies to cool completely before removing from parchment (cookies will be soft straight from the oven, but crisp up after about 5 minutes).
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Notes
Storage: Cookies will keep for 5-7 days in a sealed container at room temperature or up to 3 months in the freezer.
Use parchment, not grease: It's important to use parchment, foil, or a silicone baking mat and not grease. Grease will cause cookies to spread even more than they're meant to spread and cookies can still stick to the sheet pan.
Can I use brown sugar? No. During testing, brown sugar made these cookies turn out chewy and slightly sticky. Using granulated sugar ensures your cookies turn out crisp.