01 -
Adjust oven rack to middle position. Preheat oven to 350°F. Line two large baking sheets with parchment paper.
02 -
In a large bowl, rub lemon zest into the granulated sugar using fingertips until aromatic.
03 -
Add softened butter and vanilla to the bowl. Cream together until light and fluffy.
04 -
Mix in egg yolks until thoroughly combined.
05 -
In a separate bowl, whisk together gluten free flour blend, baking powder, xanthan gum, and salt. Add to wet ingredients. Mix until a smooth, non-sticky dough forms.
06 -
Transfer one-third of dough to a bowl. Spread out, dollop one-third blueberry jam, and gently swirl. Layer with another third of cookie dough, repeat swirling jam. Top with remaining dough, add remaining jam, swirl. Gently fold dough over itself a few times to marble without overmixing.
07 -
In a bowl, combine cream cheese and sugar until smooth. Add warm heavy cream and vanilla, folding until loose but not runny. Adjust consistency with extra cream if needed.
08 -
Place granulated sugar for coating into a small bowl. Scoop 2 tablespoons dough, roll in sugar to coat, then shape into a ball. Place on prepared sheet. Use a 1-tablespoon measure to indent each ball.
09 -
Fill each indentation with 2-3 teaspoons cheesecake filling. Arrange cookies at least 2 inches apart on baking sheets. Repeat for all dough to yield 14 cookies.
10 -
Bake one sheet at a time at 350°F for 10–12 minutes, until cookies are puffed and cheesecake filling is just set. Keep the second sheet at room temperature until baking.
11 -
Allow cookies to cool completely on the baking sheets to maintain structure. Do not transfer while hot.
12 -
In a saucepan, combine blueberries, sugar, and lemon juice. Cook over medium-low heat until blueberries release juices and soften. Remove from heat.
13 -
Mix cornstarch and water, add slurry to blueberry mixture. Stir and cook over medium-high heat until juices have thickened, about 2–3 minutes. Cool to room temperature.
14 -
Top each cookie with a spoonful of blueberry sauce before serving.