Ingredients
Wet Ingredients
- 1 cup (2 sticks, 226g) salted butter
- 1 ½ cups (320g) dark brown sugar
- 2 large eggs, at room temperature
- 1 tablespoon vanilla bean paste
Dry Ingredients
- 2 cups (240g) all purpose flour
- 1 ¾ cups (158g) old fashioned rolled oats
- 1 teaspoon baking soda
- 1 to 2 tablespoons espresso powder
- ½ teaspoon cinnamon
- ¼ teaspoon kosher salt
Espresso Icing
- 1 tablespoon reserved brown butter
- 1 cup (180g) powdered sugar
- 1 teaspoon vanilla bean paste
- ½ teaspoon espresso powder
- 2 to 3 tablespoons milk
Instructions
- Brown the butter: Melt the butter in a medium saucepan over medium heat, whisking constantly. The butter will crackle and foam, then turn a golden amber color after 5 to 8 minutes. Remove from heat, scraping all brown bits into an electric mixer bowl to cool for 5 to 10 minutes.
- Reserve butter for icing: Remove 1 tablespoon of the browned butter from the mixer bowl and place it in a medium bowl for the espresso icing; set aside.
- Combine wet ingredients: Add brown sugar to the browned butter in the mixer. Using the paddle attachment, mix on medium speed for 1 minute until combined. Add eggs and vanilla bean paste; mix again on medium speed until smooth and caramel-like, about 1 minute.
- Mix dry ingredients: In a separate bowl, whisk together flour, oats, baking soda, espresso powder, cinnamon, and salt. Add dry mixture to wet ingredients and mix on medium-low speed until just combined.
- Chill the dough: Cover the dough with plastic wrap and refrigerate for 30 minutes. Meanwhile, preheat oven to 350°F and line a baking sheet with parchment paper.
- Shape and bake cookies: Use a medium cookie scoop or roll dough into 1 ½ tablespoon-sized balls. Place on baking sheet with 2 inches spacing. Bake for 10 to 12 minutes until edges are just slightly golden; 10 minutes preferred. Cool on sheet for 5 minutes then transfer to wire rack to cool completely.
- Prepare espresso icing: Warm the reserved brown butter if it has solidified. Add powdered sugar, espresso powder, vanilla bean paste, and 1 tablespoon milk. Whisk until smooth and thick; add more milk ½ teaspoon at a time if needed to thin slightly.
- Glaze the cookies: Lightly dip each cooled cookie into the espresso icing and return to wire rack or parchment to allow icing to harden. This yields about 2 dozen cookies.
Notes
- Chilling the dough helps improve texture and prevents spreading.
- You can adjust the espresso powder amount to your taste preference for stronger or milder coffee flavor.
- If you don’t have vanilla bean paste, pure vanilla extract can be used as a substitute.
- The brown butter adds a rich, nutty depth, so don’t skip that step.
- For softer cookies, slightly underbake and allow them to finish cooking as they cool.
- Store cookies in an airtight container at room temperature for up to 5 days.
- For a stronger coffee flavor in the icing, add up to ¾ teaspoon espresso powder.
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American