These homemade heart-shaped cookies are the sweetest way to share the love this Valentine’s Day. (We also rate them as a treat for birthday parties, baby showers, and anywhere a chocolate-hazelnut or raspberry sandwich cookie would be appreciated.) A simple oat cookie dough made with toasted oats is cut into heart shapes and baked. Once cooled the cookies are sandwiched with a store-bought filling—chocolate-hazelnut spread or raspberry jam are our favorites—but feel free to use your favorite jam. Choosing which to use might be the hardest part of making these treats.
Directions
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Preheat oven: toast oats:
Preheat oven to 350°F. Spread oats on a rimmed baking sheet; bake until golden, about 10 minutes.
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Combine oats with flour and salt:
Transfer to a medium bowl; stir in flours and salt.
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Beat butter and sugar:
In a large bowl, using an electric mixer, beat butter and brown sugar on medium until fluffy. Add vanilla; beat to combine. Scrape down bowl.
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Add oat mixture, form dough, and refrigerate:
Add oat mixture; beat until blended. Form dough into a disk, wrap in plastic, and refrigerate until firm, 2 hours.
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Preheat oven; roll dough:
Preheat oven to 325 degrees, with racks in upper and lower thirds. On a lightly floured surface, roll dough 1/8 inch thick, dusting lightly with flour as needed.
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Cut out cookies and bake:
Cut out cookies with a 2-inch heart-shaped cookie cutter; place 1/2 inch apart on two parchment-lined baking sheets. Bake until cookies are golden around edges, 12 to 15 minutes, rotating sheets halfway through.
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Cool; fill and sandwich cookies:
Let cool 5 minutes, then transfer cookies to a wire rack to cool completely. Repeat with remaining dough, chilling if too soft (reroll and cut scraps). Spread filling on flat side of half the cookies; top with remaining cookies.
