Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
Cream the butter, stevia, and honey in a large mixing bowl until fluffy and light in color.
Add the egg yolk and vanilla extract. Mix until smooth and well-combined.
Mix in the all-purpose flour and strawberry powder. Stir just until the dough comes together.
Scoop out 1-tablespoon portions of dough, roll into balls, and place them on your prepared baking sheet.
Press your thumb or the back of a small spoon into the center of each cookie to create an indent.
Freeze the tray for 10 minutes. This helps the cookies hold their shape while baking.
Bake for 12 minutes or until the edges are just barely golden.
Cool the cookies slightly before filling each indent with strawberry jam.
Drizzle with a touch of honey and garnish with a small strawberry slice if desired.