1. Pour all the ingredients into a large mixing bowl.
2. Mix with a fork and then with a spatula until it forms a ball.
3. Let it rest for at least 1 hour before using.
4. FRANGIPANE CREAM
Soften the margarine.
5. Mix the ground almonds with the sugar and butter.
6. Add the beaten eggs, vanilla, and a few drops of almond extract.
7. Fill your galette with this mixture before baking it.
8. THE GALETTE
Divide the dough in half.
9. Roll out one half to form a 30 cm diameter circle.
10. Place it on a wet baking sheet.
11. Cover with the frangipane cream, leaving a 2 cm border, and wet this border.
12. Place the fève (ceramic charm).
13. Roll out the second half in the same way, and place the second round of dough on top of the first.
14. Press the edges to make the two layers stick together.
15. Brush with beaten egg and draw decorations with the tip of a knife.
16. Bake for about 30 minutes in a hot oven and enjoy warm.
17. NOTE: To ensure that the edges of the dough rise well, it needs to be "cut" (using a mold imprint, for example: mold turned upside down), and the "cut" needs to be clean!