1Tbspthick jam apple, strawberry, etc. If not thick enough, add 1/2 tsp cornstarch.
Instructions
Preheat oven to 425F.
Soften the butter by letting it sit at room temperature for 40 minutes or microwave it for about 15-20 seconds. Add the powdered sugar and mix thoroughly.
Next add the egg white, vanilla extract, salt and mix well.
Finally, add the flour and mix well.
Line a large baking sheet with parchment paper.
Place the dough into a disposable pastry bag with a large star tip and pipe cookies onto the baking sheet. The cookies should be about 2 inches in diameter.
Using a 1/4 thick stick, gently press in the center of each cookie, about half way. You want to make a little dent, not a hole. Fill the centers with a little bit of jam.
Bake at 425F for about 8-10 minutes, or until the sides of the cookies are starting to turn golden brown.
Notes
Some of my readers have had a challenge piping the batter. If that's the case with you, try the Ateco #828 tip which has a .63″ diameter opening, this one will do the trick.