01 -
Set your oven to 350°F (175°C) and line a baking sheet with parchment paper
02 -
In a large bowl, beat the softened butter and sugar together until the mixture becomes light and fluffy
03 -
Mix in the egg yolk and vanilla extract until everything is well combined
04 -
Gradually add the flour and mix until it forms a smooth dough
05 -
Roll small portions of dough into balls, flatten slightly, then pinch the top to create heart shapes
06 -
Using your thumb or a small spoon, make a dip in the center of each heart-shaped cookie
07 -
Fill each indentation with a small spoonful of jam
08 -
Bake for 10-12 minutes until the edges turn slightly golden
09 -
Let the cookies cool completely on the baking sheet before serving or gifting