Recipe Steps steps 9 1 h 5 min
To prepare the tartlet dough, add the walnut flour, coconut flour, psyllium husk, xanthan gum, and salt to a food processor. Blend until a uniform dry mixture forms. Cut the cold butter into 6-8 pieces and add them to the food processor.
Pulse a few times until a rough mixture forms, similar to bread crumbs. Add the egg and pulse a few times until the dough starts coming together. Bring the dough together using a spatula and transfer it to a bowl.
Form the dough into a ball using your hands and wrap it in cling film. Press to flatten it slightly. Place it in the fridge for 30 minutes.
Preheat your oven to 200 C/400 F and grease the bottom and sides of a cupcake pan with butter. Take the dough out of the fridge, unwrap it, and roll it to 1/8 inch ( ¼ cm ) thick between 2 pieces of parchment paper. Using a round cutter slightly larger than the bottom of your cupcake pan (we used a 10cm cutter), cut the dough into 10 round pieces.
Carefully transfer each dough into the molds. Press with your fingers to fit it properly. Prick the bottoms with a fork.
Line all the tart shells with baking paper or aluminum foil and add baking beans or pastry weight. Bake them for 5 minutes, remove the baking paper and weight, and bake for 5 more minutes. Take the tartlet shells out of the oven and start preparing the filling.
In a bowl, mix the ricotta and parmesan cheeses. Divide among the tartlet shells. Cut all the cherry tomatoes into quarters and place 2 quarters on top of the filling.
Drizzle with olive oil and transfer to the oven. Bake for 15-20 minutes until golden. Take them out of the oven and let them cool for 15 minutes.
Top with the arugula. Drizzle a little more oil, and finish them off with freshly cracked black pepper. Serve immediately.