One Dough, Four Flavors: Levain-Style Cookies

In a large bowl, beat the cold butter until softened.
Add brown sugar and white sugar, and mix until well incorporated.
2. Add Wet Ingredients
Add eggs one at a time, beating after each addition.
Mix in vanilla extract until fully combined.
3. Combine Dry Ingredients
In a separate bowl, whisk together flour, baking powder, baking soda, and salt.
Gradually mix the dry ingredients into the wet ingredients until a dough forms.
4. Divide and Flavor the Dough
Divide the dough into four equal portions (about 330 g each).
Mix in the respective flavor additions for each variation:
Classic: Walnuts + chocolate chips
Biscoff: Biscoff spread + crushed biscuits
Matcha: Matcha powder + white chocolate chips
Double Chocolate: Cocoa powder + chocolate chips + walnuts
5. Shape and Chill
Form each portion into 110 g dough balls.
Freeze for at least 1 hour or overnight for best texture.
6. Bake
Preheat oven to 360°F (180°C).
Place dough balls on a lined baking sheet, spacing them 2 inches apart.
Bake for 12 minutes, until the edges are set but the center remains gooey.
7. Cool and Serve
Let cookies cool on the baking sheet for a few minutes before serving.
Enjoy warm, with extra toppings if desired.
Serving and Storage Tips