Place <quantity>320<unit>g</unit></quantity> of all-purpose flour <quantity>½<unit>tbsp</unit></quantity> of salt and <quantity>½<unit>tsp</unit></quantity> of baking powder in a stand mixer bowl

Set the stand mixer with the paddle attachment and add <quantity>200<unit>g</unit></quantity> diced butter while mixing on low speed

Mix until a sand texture is obtained

Add <quantity>1</quantity> egg and mix until all ingredients are combined into a smooth dough. Avoid over kneading to prevent elasticity

Transfer to a work surface and make a disk shape

Wrap the dough in cling film and refrigerate for at least 20m before use. The shortcrust dough is ready

Finely chop <quantity>1</quantity> onion

Remove the core and dice <quantity>2</quantity> tomatoes

Dice <quantity>700<unit>g</unit></quantity> of preserved hearts of palm

Mince <quantity>5</quantity> garlic cloves

Melt <quantity>2<unit>tbsp</unit></quantity> of butter on a skillet over low heat

Add the chopped onion and stir

Add the minced garlic and stir until the onion is translucent

Add the diced tomato and stir

Add the hearts of palm and stir until the tomatoes are wilted

Add <quantity>2<unit>tbsp</unit></quantity> of all-purpose flour and stir

Add <quantity>¼<unit>cup</unit></quantity> of milk and stir until it thickens

Add <quantity>2<unit>tbsp</unit></quantity> of chopped parsley and stir to combine. Adjust the salt. The filling is ready, remove it from the heat and reserve

Preheat the oven to <temperature>180<unit>°C</unit></temperature>

Add enough dough to cover the bottom and sides of each pudding mold

Use your thumbs to shape the dough into each pudding mold

Add the filling to each pudding mold

Press a piece of dough against your hands or use a rolling pin to create the pie tops

Cover the pies with the pie tops, trimming the excess of dough

Whisk <quantity>1</quantity> egg with <quantity>1<unit>tbsp</unit></quantity> of water

Brush each pie with the egg mixture

Bake for 35m until the dough is light golden brown

Remove from the molds. The heart of palm mini pies are ready

Enjoy this delicious treat!