Enjoy tangy orange marmalade in a buttery cookie with this Orange Marmalade Thumbprint Cookies recipe. Perfect for both casual snacking and elegant gatherings, these cookies offer a burst of citrus flavor in every bite.
Whisk all purpose flour, salt, and cornstarch in a medium bowl. Set aside. In a large bowl or stand mixer bowl, cream butter and granulated sugar, about 2 minutes.
Add egg and vanilla/orange extract. Mix in the dry ingredients until no dry flour, but do not overmix. Cover and refrigerate 30 minutes to 1 hour.
Preheat oven to 350 degrees F. Prepared cookie sheets with parchment paper or silicone mats. Place ⅓ cup of granulated sugar in a bowl. Remove cookie dough from the refrigerator and roll into tablespoon sized balls, then into the sugar.
Place on baking sheet about 2 inches apart.
Using your thumb, back of a spoon or the end of a wooden spoon handle, make an indentation in the center of each cookie. If you get cracks, smooth them out with your finger.
Fill ½ teaspoon of marmalade into each cookie. Bake 9-10 minutes or until slightly golden on the edges. Cool about 5 minutes on baking sheet, then place on cooling racks. Cool completely before frosting.
Whisk glaze ingredients (powdered sugar, 2-3 tablespoons vanilla or orange extract) in a small bowl until smooth.
Place glaze into a Ziploc bag or piping bag. I placed a piping bag into a glass and filled the bag. Cut the end so you have just a small hole.
Drizzle over the cookies. Allow the glaze to set, then enjoy!