Brown Butter S'mores Cookies

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My brown butter S'mores cookies are soft and chewy with perfectly crisp edges, and loaded with gooey marshmallows and melty chocolate.

Prep Time20

Cook Time15

Total Time35

Course: Dessert

Cuisine: American

Keyword: Brown Butter Cookies, brown butter s'mores cookies, S'mores, s'mores cookies

Servings: Cookies

Calories: 261kcal

Author: Terri Weir

Ingredients

2 ½ cups all-purpose flour
1 teaspoon baking soda
½ teaspoon salt
1 cup + 3 tablespoons butter
1 ½ cups light brown sugar
¼ cup granulated sugar
1 large egg
1 egg yolk
2 teaspoons vanilla extract
1 tablespoon sour cream
1 cup semi-sweet chocolate chips
1 ½ cups mini marshmallows
3.5 ounce dark chocolate bar, chopped

Instructions

Preheat the oven to 350 degrees and line a baking sheet with parchment paper. Set aside.
In a medium sized saucepan, brown butter over medium heat. Stir constantly and cook until butter starts to turn a slight amber color.
Remove from heat and pour browned butter and all the brown bits into a large mixing bowl and let cool for 10-15 minutes.
Add brown sugar, sugar, egg, egg yolk, vanilla, and sour cream. Beat until combined.
In a medium bowl, whisk flour, baking soda, and salt together. Gradually add dry ingredients into the wet ingredients and beat on low speed until combined.
Fold in chocolate chips, marshmallows, and chopped chocolate bar until incorporated.
Using a 1 inch cookie scoop, roll cookie dough and place on the prepared baking sheet.
Bake for 8-10 minutes or until the edges start to brown.
Remove from the oven and let cool on the baking sheet for 3-4 minutes before transferring to a wire rack to cool.

Notes

Watch the butter carefully while browning so it doesn't burn.
Let the browned butter cool before adding the eggs.
Don't overmix the dough after adding the flour.
Slightly underbake the cookies for extra soft centers.
If a marshmallow melts out while baking, gently push it back toward the cookie while it's still warm.

Nutritional values are approximate.

Please note that these values can change with different brands and any modifications made to the recipe. For the most accurate information, use a nutritional calculator with the exact brands and measurements.

Nutrition