One Dough, Four Flavors: Levain-Style Cookies

Introduction
Get ready to bake the ultimate New York-style Levain cookies using just one base dough with four delicious flavors! Whether you’re in the mood for classic chocolate walnut, Biscoff, matcha white chocolate, or double chocolate, this versatile recipe allows you to customize each batch while keeping things simple. Thick, gooey, and packed with flavor, these cookies are perfect for any occasion.

Ingredients
Base Dough:
190 g unsalted cold butter
135 g brown sugar
135 g white sugar
2 large eggs
2 tsp vanilla extract
355 g all-purpose flour
1 tsp baking powder (4 g)
1 tsp baking soda (4 g)
1 tsp salt (5 g)
Flavor Additions (For Each 1/4 Dough Portion – About 330g Each):
Classic Chocolate Walnut:

1/3 cup chopped walnuts (40 g)
1/3 cup chocolate chips (50 g)
Biscoff:

1/4 cup Biscoff spread (50 g)
1/2 cup crushed Biscoff biscuits (60 g)
Matcha White Chocolate:

2 tsp matcha powder (8 g)
1/3 cup white chocolate chips (50 g)
Double Chocolate Walnut:

2 tbsp dark cocoa powder (12 g)
1/2 cup chocolate chips (75 g)
1/3 cup chopped walnuts (50 g)
How to Make
1. Cream Butter and Sugars