Sourdough Thumbprint Cookies are soft delicious sugar cookies with a dollop of your favorite jam right in the center. Made with sourdough discard or active starter. These cookies come together quickly with no special tools. Sourdough Thumbprint Cookies are the perfect treat for any special occasion. Easy cookie to make with children for that special bonding moment.
In a large mixing bowl add room temperature unsalted butter (113 g) with sugar (150 g)and mix with the silicone spoon to create a creamy mixture.
Next add 1 egg, sourdough starter (55 g) and vanilla (6 g). Mix well.
After that add the baking powder (1/2 tsp) and salt (1/2 tsp) into the flour ( 300 g) and slightly mix. Then add that flour mixture into the butter mixture and fold the flour in.
Place the ball of dough into the refrigerator for about 30 mins (while your oven is preheating at 350 degrees F).
Remove the dough from the fridge and start making the cookies by taking about 1 tbsp of dough, rolling it into a ball with your hands, slightly flattening it out between your hands and then using your thumb indent the middle.
Place a dollop (about 1 tsp ) of your favorite jam right in the center.
Bake at 350 degrees F for 15 minutes or until the bottom of the cookie will be slightly golden.
Let the cookie cool on a rack before transferring to a serving plate.