'- 250 gram unsalted butter, room temperature- 200 gram sugar (*)- 1 egg- 1 teaspoon vanilla extract- 1/2 teaspoon salt- 250 gram all-purpose flour- 1 egg yolk (for egg wash)- almond slices (for garnish)

1. Preheat oven to 350 Fahrenheit (180 Celsius). Grease an 8"x8" square cake pan, line with a parchment paper with overhang.2. Mix together butter, sugar, egg, vanilla, and salt until pale and fluffy.3. Stir in all-purpose flour and fold with a spatula until homogenous. The batter will be stiff, almost like a cookie dough.4. Transfer batter/dough into the prepared pan, spread to cover the pan.5. Use a fork to make pattern on the top surface, brush with egg wash, and sprinkle with almond slices.6. Bake in preheated oven for 30 minutes. Remove from over. Wait until the cake is completely cool before removing from pan and cutting into slices.