01 -
Preheat oven to 350ºF (180ºC). Prepare paper muffin cups or butter/spray the muffin pans for easier handling.
02 -
In a large bowl, mix soft butter, lemon zest, and vanilla extract until combined.
03 -
Add sifted powdered sugar into the mixture and mix well.
04 -
Add sifted flour, baking powder, and salt in two parts, mixing well between additions.
05 -
Gradually sift in cornstarch, mixing well until a soft, non-sticky dough forms.
06 -
Form walnut-sized balls of dough or use a measuring spoon, then press each ball into paper muffin cups halfway up the sides.
07 -
Fill each cup carefully with raspberry jam or Nutella, then top with sliced almonds.
08 -
Bake for 15–20 minutes until slightly golden and dry.
09 -
Let the tarts cool for 10–15 minutes on a wire rack. Run a knife along the edges to ensure they don't stick, and carefully remove them from the pan.
10 -
Serve with a light dusting of powdered sugar on top.