There is something unexpectedly magical about the pairing of herbs and sweets. These Brown Butter Thyme Peanut Butter Cup Cookies combine rich, nutty brown butter with the subtle woodland fragrance of fresh thyme, creating a treat that feels equally at home on a modern dessert table or in a bustling fantasy tavern. The caramel notes of browned butter deepen the flavor of the dough, while chopped peanut butter cups melt into pockets of chocolate and peanut butter throughout each cookie. The result is a cookie that balances comfort and curiosity; a familiar favorite elevated by a touch of garden magic. Whether enjoyed alongside a steaming cup of tea or shared with fellow adventurers, these cookies are a reminder that even the simplest ingredients can create something enchanting.
While peanut butter cup cookies are enjoyed year-round, they are especially popular during the cooler months of autumn and winter when rich, comforting flavors take center stage. The addition of thyme gives these cookies a subtle herbal note that feels particularly fitting for harvest season, when fresh herbs are abundant in gardens and markets. Brown butter, with its warm caramelized aroma, further enhances the cozy character of the recipe.
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Ingredients
~*~*~*~* see recipe card for quantities *~*~*~*~
- unsalted butter
- fresh thyme
- cane sugar
- brown sugar
- egg
- vanilla extract (or vanilla bean paste)
- baking soda
- salt
- all purpose flour
- peanut butter cups
Instructions
- Melt the butter in a saucepan with the thyme sprigs over medium heat. Cook until golden brown and fragrant. Remove from heat, let steep for 5 minutes, then strain out the thyme. Allow the butter to cool slightly.
- In a mixing bowl, whisk together the brown butter, cane sugar, and brown sugar. Mix in the egg and vanilla. Stir in the baking soda, salt, and flour until a dough forms.
- Fold the chopped peanut butter cups into the dough. Chill for 30 minutes if desired for thicker cookies.
- Bake & enjoy!
Hint: For the best flavor, don't skip browning the butter. The butter should turn a deep golden color and smell nutty before removing it from the heat. Keep a close eye on it, as it can go from perfectly browned to burnt in just a few seconds. If you'd like a stronger herbal flavor, allow the thyme to steep in the warm butter for a few extra minutes before straining.
Substitutions
- Fresh thyme: Replace with ½–1 teaspoon dried thyme, or substitute rosemary for a more pine-like herbal flavor.
- Cane sugar: Granulated white sugar works perfectly in its place.
- Brown sugar: Light or dark brown sugar can be used depending on how rich and molasses-forward you'd like the cookies to be.
- All-purpose flour: A 1:1 gluten-free baking flour can be substituted for a gluten-free version.
- Peanut butter cups: Try chopped dark chocolate, milk chocolate chunks, peanut butter chips, or your favorite chocolate candy pieces.
- Butter: For a dairy-free option, use a plant-based butter stick that is formulated for baking, though the brown butter flavor will be less pronounced.
Equipment
- Small saucepan
- Fine mesh strainer (or spoon for removing thyme sprigs)
- Large mixing bowl
- Whisk or hand mixer
- Measuring cups and spoons
- Rubber spatula or wooden spoon
- Baking sheet
- Parchment paper
- Cookie scoop or spoon
Brown Butter Thyme Peanut Butter Cup Cookies
Equipment
- small saucepan
- fine mesh strainer
- Large Mixing Bowl
- Whisk
- measuring cups & spoons
- Wooden Spatula
- Baking Sheet
- Parchment Paper
- cookie scoop or spoon
Ingredients
- 1 stick butter equivalent to ½ cup butter
- 2-3 sprigs fresh thyme
- ½ cup cane sugar
- ¼ cups brown sugar
- 1 egg
- 1 tsp vanilla extract
- ½ tsp baking soda
- ¼ tsp sea salt
- 1 ¾ cup all-purpose flour
- 1 cup chopped peanut butter cups
Instructions
- Melt the butter in a small saucepan over medium heat. Add the thyme sprigs and continue cooking until the butter turns golden brown and smells nutty, about 3–5 minutes. Remove from the heat and let the thyme steep for 5 minutes. Strain out the thyme and allow the butter to cool slightly.
- Pour the brown butter into a mixing bowl. Add the cane sugar and brown sugar and whisk until combined. Mix in the egg and vanilla extract until smooth.
- Stir in the baking soda and salt. Gradually add the flour, mixing until a soft dough forms. Fold in the chopped peanut butter cups, reserving a handful for topping the cookies.
- For thicker cookies and deeper flavor, chill the dough for 30 minutes.
- Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper. Scoop the dough into balls about 2 tablespoons each and place them 2 inches apart on the baking sheet. Press a few extra peanut butter cup pieces onto the tops.
- Bake for 10–12 minutes, or until the edges are lightly golden and the centers are just set. Sprinkle with a tiny pinch of flaky sea salt if desired. Let the cookies cool on the baking sheet for 5 minutes before transferring to a wire rack.
Storage
Store the cookies in an airtight container at room temperature for up to 5 days. To keep them soft, place a slice of bread in the container with the cookies. For longer storage, freeze the baked cookies or unbaked cookie dough for up to 3 months. Allow frozen cookies to thaw at room temperature before serving, or bake frozen dough balls directly from the freezer, adding 1–2 minutes to the baking time.
FAQ
Yes! Substitute ½–1 teaspoon dried thyme for the fresh thyme sprigs. The flavor will be slightly more concentrated, so start with less and adjust to taste.
No, but it is highly recommended. Browning the butter adds a rich, nutty flavor that makes these cookies extra special.
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