A pastry treat to make all the cookies and cream lovers childishly happy.
Combine flour, sugar, cocoa, and salt in the bowl of food processor and pulse. Add "butter" and coconut oil and pulse a few times more until crumbly. Add water and process until the dough comes together, adding a tiny bit more water if necessary until it pulls away from the sides of bowl..
Stir melted coconut oil and almond milk together in the bowl of stand mixer or a medium mixing bowl until smooth. Add salt, vanilla, and cornstarch and stir to combine. Mix in powdered sugar a cup at a time until combined then beat until fluffy. Add cookie pieced and beat just long enough to mix them into filling.
Meanwhile, preheat oven to 375 degrees F (190 C). When oven is ready, remove trays from fridge and bake for 10 - 12 minutes until the edges are starting to darken and crisp. Remove tray from oven and cool tarts completely before adding icing.