Dulce de leche is a thick, rich caramel made with sweetened milk and is sold in Mexican markets and some well-stocked supermarkets. If it's unavailable, use a thick caramel sauce or caramel ice cream topping for these cookies.
Prep and Cook Time: about 1 1/2 hours, plus about 30 minutes to freeze.
1 cup (1/2 lb.) butter, at room temperature
2/3 cup sugar
2 large egg yolks
1 large egg
3 tablespoons dark rum
1 teaspoon vanilla
2 cups all-purpose flour
1 cup cornstarch
1 teaspoon baking powder
About 1 3/4 cups dulce de leche or caramel sauce (see notes)
About 1 cup sweetened flaked dried coconut or unsweetened shredded dried coconut
How to Make It
In a large bowl, with an electric mixer on medium speed, beat butter and sugar until smooth. Add egg yolks, whole egg, rum, and vanilla and beat until well blended.
In another bowl, mix 2 cups flour, cornstarch, and baking powder. Stir or beat into butter mixture until well blended. Divide dough in half. Flatten each portion into a disk, wrap in plastic wrap, and freeze until firm, about 30 minutes.
Unwrap dough. On a lightly floured surface, with a floured rolling pin, roll one disk at a time to about 1/8 inch thick. With a floured 2- to 3-inch round cutter, cut out cookies. Place about 1 inch apart on buttered or cooking parchment-lined 12- by 15-inch baking sheets. Gather excess dough into a ball, reroll, and cut out remaining cookies.
Bake in a 350° oven until cookie edges are golden, about 10 minutes; if baking more than one pan at a time, switch pan positions halfway through baking. Let the cookies cool on sheets for 5 minutes, then use a wide spatula to transfer them to racks to cool completely.
Turn half the cookies bottom side up and spread each with about 1 tablespoon dulce de leche. Top with remaining cookies, bottom side down. Place coconut in a shallow bowl. Gently squeeze each sandwich until filling begins to show at the edges, then roll edges in coconut.
What a disappointment! These cookies smelled great while they were in the oven. My husband couldn't wait to try one. I put one together, tasted it... and it was BLAND. My husband said the same thing. It's not bad, just really really bland. There's practically no taste to it at all. Definitely won't make these again!
These cookies were deeeeelicous!
Since I made these for 3rd graders I omitted the rum.
I forgot about the dough in the freezer, so instead of 30 mins. it was in there for more like an hour. When I took the dough disks out they were solid, I let them sit at room temp. for about 15 mins then started to roll the dough.
My advice is GENTLY roll the dough don't press into it with the pin or it will get stuck to the surface you're working with. If you notice the dough is not rolling out flip it over.
PattyP is absolutely right - if these brown on the edges they are overcooked, and 1/8 inch is too thin. I dust my cookies with powdered sugar instead of the coconut, and they are the best cookies EVER. Labor intensive, and sometimes easy to break the cookies when filling them - but that just means I have to eat those broken cookies...
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