In a small saucepan, heat butter over low heat until browned and fragrant. Remove from heat, and let cool slightly.
In a medium bowl, combine eggs and sugar, whisking well. Add browned butter, whisking to blend. Add almond flour, folding to incorporate.
Place tartlet shells on a rimmed baking sheet. Place ¼ teaspoon cherry preserves in each tartlet shell. Fill each shell with almond mixture. Arrange sliced almonds on top of filling in a flower pattern.
Bake until filling is firm, 8 to 10 minutes. Let cool completely.
Store tartlets in an airtight container at room temperature for up to a day.
Notes
*We used Clearbrook Farms Mini Bite-size Sweet Tart Shells.
Recipe by TeaTime Magazine at https://teatimemagazine.com/mini-cherry-bakewell-tartlets-recipe/