Cocoa blossom cookies are a rich, chocolatey cookie, rolled in powdered sugar, with soft fudgy interiors and topped with a Hershey kiss. These delicious double chocolate cookies are a cross between two of my favorite cookies—peanut butter blossoms and a chocolate crinkle cookie!
In a medium mixing bowl, whisk together baking soda, cocoa powder, salt, flour, and cornstarch until there are no lumps. Set aside.
In a separate mixing bowl, cream together butter and sugar for 1 minute. Add in egg and vanilla and beat on high for 2-3 minutes until mixture is smooth, light, and fluffy.
Add the dry ingredients to the creamed butter and sugar mixture and mix on low until a soft dough forms and there are not pockets or dry ingredients.
Cover the dough in plastic wrap and chill for 3 hours or up to 3 days.
Preheat the oven to 375 degrees Fahrenheit and line a baking sheet with silicone mats or with parchment paper. Scoop 1 ½ tablespoons of dough and roll into balls. Roll the dough in granulated sugar and then generously in powdered sugar. This helps give them a crisp crust and helps the powdered sugar to not get too absorbed into the cookie.
Bake for about 6 minutes. The cookies should be round and puffy. Let cool for about 2-3 minutes before placing an unwrapped Hershey kiss in the center of the cookie. Let cool for another couple minutes before transferring to a cooling rack.
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Notes
If the cookies are spreading too much, try freezing the cookie dough balls for 10 minutes before baking.
Use good quality cocoa powder. High quality cocoa powder really does make a difference in flavor and texture of the cookies. For these chocolate blossom cookies I recommend a good natural cocoa powder.
Swap the Milk Chocolate Kiss. Swap the traditional milk chocolate Hershey kiss for a white chocolate peppermint kids, mint truffle kiss, caramel kiss, cherry cordial kiss, caramel kiss, hugs, or even a Rolo. If using something with a soft filling I recommend freezing them for about 10 minutes before placing on the warm cookies.