Baking a Gateau Basque Cake is easier than it seems. Follow these step-by-step instructions to create this delicious dessert:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
2. Combine Dry Ingredients: In a large bowl, mix together the flour, sugar, salt, and baking powder until well combined.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar until creamy and pale.
4. Add Egg & Extracts: Add the egg, vanilla, and almond extracts to the butter mixture, mixing until fully incorporated.
5. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until a smooth dough forms.
6. Divide Dough: Split the dough in half and shape into discs. Wrap in plastic wrap and chill for 30 minutes.
7. Prepare the Pan: Roll out one disc of dough on a floured surface, ensuring it’s large enough to fit the bottom of your cake pan.
8. Layer the Filling: Place the rolled dough in the pan and fill with your choice of pastry cream or almond cream.
9. Top with Second Layer: Roll out the second disc of dough similarly and cover the filling with it.
10. Decorate: Brush the top with an egg wash for a golden finish. Use a fork to create a decorative pattern if desired.
11. Bake: Place the cake in the preheated oven and bake for 40-45 minutes, until golden brown.
12. Cool Down: Once baked, allow the cake to cool in the pan for about 20 minutes before transferring it to a wire rack to cool completely.

These steps will have you relishing the delightful flavors of your homemade Gateau Basque Cake in no time!