Introduction

These chewy oatmeal lace cookies are thin, crispy, and irresistibly delicious. With a simple combination of oats, butter, and brown sugar, they offer a perfect balance of chewiness and crisp edges. They’re quick to bake and amazing with a cup of tea or coffee.

A close-up of a thin, round cookie held by a woman's hand with red nail polish, showing a textured surface with golden brown color and crispy edges that have a mix of small and larger crispy bits glistening slightly. The cookie’s uneven pattern suggests a crunchy texture, and a few more similar cookies are blurred in the background on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1/2 cup (1 stick) unsalted butter, room temperature (113g)
1 cup packed light brown sugar (200g)
1 cup old fashioned oats (96g)
1 Tbsp + 1 tsp all-purpose flour (12g)
1/2 tsp fine salt (3g)
1 large egg, room temperature (56g)
1 tsp vanilla extract or vanilla bean paste (4g)

Instructions

Step 1: Preheat the oven to 375ºF (190ºC) and line 4 large baking sheets with silicone mats or parchment paper. If you have fewer sheets, line as many as you have.
Step 2: In a large frying pan over medium heat, melt the butter and brown sugar together, stirring frequently until smooth with no clumps. It’s okay if they’re not fully combined yet. Remove from heat.
Step 3: Stir in oats, flour, and salt until the oats are fully coated with the butter and sugar mixture.
Step 4: Add the egg and vanilla extract, stirring until fully incorporated. The batter will be slightly thin and soupy.
Step 5: Drop 1 teaspoon of batter onto prepared baking sheets, leaving at least 2 inches between each cookie to allow spreading.
Step 6: Bake two trays at a time for 5–7 minutes. The ideal time is about 6½ minutes, but ovens vary. Remove when edges start to brown for chewier cookies or wait for golden-brown edges for crispier texture.
Step 7: Continue baking remaining trays immediately after the first batches. Watch closely as baking times may change depending on batter temperature and portion size.
Step 8: If cookies aren’t circular enough when warm, gently reshape them using a large round cutter or glass.
Step 9: Let cookies cool on baking sheets for 15 minutes, then transfer to wire racks to cool completely. Repeat dropping batter and baking until all is used.
Step 10: Store cooled cookies in an airtight container at room temperature for up to 5 days or freeze for up to one month.

Tips & Variations

For a nuttier flavor, add 1/2 cup chopped nuts like pecans or walnuts into the batter.
Use vanilla bean paste for a stronger vanilla aroma.
If you prefer softer cookies, take them out just before the edges brown.
Adjust baking time slightly if your cookies are larger or smaller than 1 teaspoon portions.

Storage

Keep cookies in an airtight container at room temperature for up to 5 days to maintain freshness. For longer storage, freeze in an airtight container or freezer bag for up to one month. Reheat gently in a low oven or microwave briefly to refresh their chewiness.

How to Serve

A close-up view of a single golden-brown, crispy cookie held delicately by a woman's hand with bright red polished nails on a white marbled surface, with more cookies blurred in the background. The cookie is thin and has a rough, bumpy texture with visible small clusters and a slightly shiny surface that suggests a sugary, caramelized coating. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I make these cookies gluten-free?

Yes, substitute the all-purpose flour with a gluten-free flour blend. Ensure your oats are certified gluten-free to avoid cross-contamination.

Why do the cookies spread so much during baking?

The high butter and sugar content causes the cookies to spread thin and lacey. Be sure to leave enough space between drops of batter, and shape them warm if needed.