These dulce de leche cookies are soft cinnamon cookies frosted with dulce de leche buttercream, topped with swirls of dulce de leche and flaky salt. They're rich, sweet, and melt-in-your-mouth delicious!
Preheat the oven to 350°F (180°C). Line 2 cookie sheets with parchment paper and set aside.
In the bowl of a stand mixer or electric hand mixer, cream the butter, sugar, and brown sugar together on high speed until the mixture is light and fluffy.
Add the egg, egg yolk, and vanilla extract. Mix on medium speed for about 1 minute.
1 large egg, 1 egg yolk, 1 ½ teaspoon vanilla extract
Mix the all purpose flour, baking powder, cinnamon, and salt into the wet ingredients on low speed. The dough will be thick and slightly sticky.
185 grams all purpose flour, ½ teaspoon baking powder, 1 teaspoon ground cinnamon, 1 teaspoon salt
Use a medium cookie scoop to scoop 6-8 cookie dough balls on each cookie sheet. Press down on each gently to promote spreading
Bake the cookies for 10-12 minutes until they're golden brown. The edges will look set but the middles will look slightly underdone.
Remove the cookies from the oven. Let cool on the hot baking tray for 5 minutes before transferring to a wire rack to cool completely.
Dulce de Leche Frosting
Cream softened butter in a large mixing bowl with a hand mixer until smooth and creamy.
113 grams unsalted butter
Beat in the dulce de leche. Gradually add the powdered sugar one cup at a time, mixing on low speed. Stop to scrape down the sides of the bowl occasionally.
64 grams dulce de leche, 200 grams powdered sugar
Mix in the vanilla and salt on medium-low until light and fluffy.
1 teaspoon vanilla extract, ½ teaspoon salt
Spread about 2 tablespoons of frosting on each cookie with a small offset spatula or the back on a spoon. You can also pipe it on using a piping bag fitted with a small round piping tip.
Sprinkle with salt if desired and enjoy!
Notes
Use room temperature butter and eggs so they are easy to mix.Weigh the flour in grams with a digital food scale for the best results.Storage: Store the unfrosted cookies in an airtight container on the counter for up to 3 days. You can store the frosting in an airtight container in the refrigerator for up to 5 days. Frosted cookies should be stored in the fridge for up to 5 days.Freezing: Place cool, unfrosted cookies in an airtight container and freeze for up to 3 months. Thaw on the counter for 30 minutes before frosting and serving. You can also freeze the cookie dough balls- freeze on a baking tray for 1-2 hours before transferring to a zip-top bag. Freeze for up to 3 months and add 1-2 extra minutes on the bake time.