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Categories:Viewed: 37 - Published at: 2 years ago
Ingredients
- 1/2 cup (4 oz.) unsalted butter, softened
- 1/4 cup granulated sugar
- 1 cup powdered sugar
- 1/4 teaspoon kosher salt
- 3 large egg whites
- 1 tablespoon vanilla extract
- 1 cup (4 1/4 oz.) all-purpose flour
- 3/4 cup canned dulce de leche (such as Nestle)
- 1/2 teaspoon kosher salt
Method
- Preheat oven to 300°F with oven racks in the top and lower third of oven. Beat together butter and granulated sugar in the bowl of a stand mixer on medium speed until well combined, about 1 minute. Gradually add powdered sugar, and beat until smooth, stopping to scrape down sides of bowl as needed. Stir in salt. Add egg whites, 1 at a time, beating well after each addition. Stir in vanilla extract. Gradually add flour, and beat on low speed until batter is smooth, about 30 seconds.
- Meanwhile, stir together dulce de leche and salt.
- Transfer dulce de leche to a piping bag fitted with a 1/4-inch round tip. Pipe about 2 teaspoons mixture onto half of the cookies, leaving a 1/4-inch border. Sandwich with remaining cookies, and press gently to spread filling to edges.
