Religieuses are a classic French pastry consisting of two choux buns filled with crème pâtissière and topped with a glaze made from chocolate or coffee. Before starting this Chocolate Religieuses recipe, organise all the necessary ingredients for the choux pastry. For this recipe, I used fondant white icing as a base for the chocolate glaze. Alternatively, if you made coffee religieuses first for example, you can use the leftover icing as a base. If you don't have enough leftover icing, complete with some fondant white icing. To make the chocolate glaze, soften the fondant icing over a bain-marie and add one tablespoon of cocoa powder first, then add a second one if necessary. The amount of cocoa powder varies according to the desired flavour intensity. Combine gently with a spatula until the chocolate is fully incorporated and there are no more lumps. To glaze the choux buns, take one choux bun with your fingers and carefully dip it in the hot chocolate icing. When the surface of the choux bun is in contact with the icing, make 3 or 4 quick movements, going up and down. Let the icing excess drip off and wipe with your fingertip to create a neat, round end on the coating. Place the coated choux bun on a baking sheet and let cool. As it sets, the icing should be smooth and glossy. If you are making both coffee and chocolate religieuses, always start by making the coffee icing first. With the leftover coffee icing, simply add some cocoa powder. Chocolate will overpower the coffee flavour and the icing will a glossy dark brown. The other way around doesn't work though.