Thousand Layer Cookies

INGREDIENTS

• 1 cup butter, unsalted and at room temperature
• 1 cup light brown sugar
• ¾ cup granulated sugar
• 1 egg, plus 1 yolk
• 1 tsp vanilla extract
• 1 cups all-purpose flour
• 1 cups bread flour
• 3/4 tsp baking soda
• 3/4 tsp salt
• 2 cups milk chocolate, finely chopped (good quality, at least 35% cocoa solids)
• Pinch of sea salt flakes

INSTRUCTIONS

1. Preheat oven to 350 degrees.
2. In the bowl of a stand mixer fitted with the paddle attachment, cream the butter and both sugars on medium speed until light and fluffy, about 3 to 4 minutes. Next, add the whole egg and egg yolk then beat until combined, followed by vanilla. With the mixer on low, gradually, add the dry ingredients, beating just until incorporated.
3. Divide the dough into 3 equal portions and shape each into a 4 × 6-inch rectangle. Wrap in saran wrap and refrigerate for at least an hour.

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