Step 1

Preheat oven to 325°F with rack on middle position. Line a baking sheet with parchment paper.

Step 2

In the bowl of a stand mixer fitted with paddle attachment on high speed, beat butter and sugar until creamy and light, 2-3 minutes (do not rush this part, as it will determine how your dough turns out.) Add vanilla and salt, scraping down bowl as needed. Switch to medium-low and gently mix in flour, just until combined. Dough should be somewhat sticky. Form into a ball shape, cover, and chill 30-60 minutes.

Step 3

Roll tablespoonfuls of dough into 1-inch balls. Place dough balls on parchment-lined baking sheets or silicone baking mats. Press down the center of each ball with handle-end of a wooden spatula or finger, making a deep well in the middle – deep but not too wide (it helps to hold the dough ball in palm of hand while forming the well with your finger.)

Step 4

Fill cookie centers generously with jam/preserves. I use either a very small spoon or a piping bag. Bake 20-25* minutes or until golden brown and puffy. Let cool 5 min. on baking sheet, then gently transfer to finish cooling on wire rack.

Step 5

When cookies are completely cooled, dust with confectioners’ sugar. Cookies can be kept in airtight container at room temp for a few days.