Inside Out Chocolate Chip Cookies

The method's theirs. Go give them the click.

Ingredients

1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
1/2 cup (100g) granulated sugar
1/2 cup (100g) packed light or dark brown sugar
1 large egg, at room temperature
1 teaspoon pure vanilla extract
1 cup (125g) all-purpose flour (spooned & leveled)
2/3 cup (55g) natural unsweetened cocoa powder
1 teaspoon baking soda
1/8 teaspoon salt
1 Tablespoon (15ml) milk (any kind, dairy or non)
1 and 1/4 cups (225g) white chocolate chips, plus a few more for optional topping*

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