In a bowl, place the cold butter cubes, flour, brown sugar, cinnamon, and vanilla extract. Using a fork, combine the ingredients. Then, using your hands, squeeze the mixture together until the butter forms small clumps. Set aside.
Place 2 tbsp. of the mixture into each muffin mould. Spread evenly with a spoon. Set the remaining mixture aside. Place 1 tbsp. of the Rescapés apple pie spread in each of the moulds. Top with the remaining crumble mixture.
Bake on the middle rack for 20 minutes.
Let cool. Remove the crumble tarts from the moulds using a butter knife. Enjoy!