These easy gluten-free raspberry thumbprint cookies are an enhanced version of buttery shortbread with delicious chewy sweet tangy raspberry jam filling. Make them with regular all-purpose flour if you prefer!
In the bowl of a stand mixer fitted with the paddle attachment, cream together the softened butter, confectioners' sugar, vanilla extract, and almond extract. Beat on medium-high speed until well combined and creamy.
Scrape the sides of the stand mixer with a rubber spatula and add in the flour and sea salt. Mix well until a thick dough forms. Initially, the dough will appear crumbly. Continue mixing in the mixer on medium speed or medium-high speed until the dough comes together in a cohesive whole.
Use a ½ tablespoon measuring spoon or a very small cookie scoop to measure out a half of a tablespoon of dough. Roll the dough into a ball then press your thumb into the center to create a divot. Continue shaping the dough into a bowl shape, then transfer to a baking sheet lined with parchment paper. Repeat for the remaining dough.
Transfer ½ teaspoon of raspberry jam to the center of each cookie dough bowl. Refrigerate the whole baking sheet (or refrigerate on large plates) for at least one hour.
When you’re ready to bake, preheat the oven to 375 degrees Fahrenheit.
Bake cookies on the center rack of the preheated oven for 10-11 minutes, until the edges are just barely showing a golden brown hue.
Remove the cookies from the oven and allow them to cool completely on the cookie sheet before moving the cooled cookies.
Optional Glaze:
Stir together 1 cup of powdered sugar with 2 tablespoons of water, lemon juice, or milk in a small bowl until creamy and all the lumps of sugar have dissolved. Drizzle the cookies with the glaze and allow the glaze to harden before moving the cookies.
The glaze is fully optional, but recommended for those who have an unstoppable sweet tooth.