Easy Lemon Thumbprint Cookies

"These buttery sugar cookies filled with sweet-tart lemon curd were inspired by our love of lemon, our appreciation for the classic thumbprint and the ever-present need for easy cookies. With all that in mind, the Betty Crocker™ Test Kitchens came up with this recipe full of time-saving hacks. It starts with an extra-citrusy dough made by adding lemon zest to Betty Crocker™ sugar cookie mix. The dough then gets rolled into balls, dipped in coarse sparking sugar and indented with the end of a wooden spoon, making..."