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Chewy Black + White Chip Oatmeal Sandwich Cookies.

Jessica, How Sweet Eats
  • 0 minutes
  • Serves 24

INGREDIENTS

1/2 cup

unsalted butter, at room temperature

1/2 cup

sugar

1/2 cup

loosely packed brown sugar

1

large egg

2 tsp

vanilla extract

1 1/4 cups

all-purpose flour

1/2 tsp

baking soda

1/4 tsp

salt

3/4 cup

rolled oats

optional: 1-2 tablespoons milk, if dough is super crumbly

2/3 cup

dark chocolate chips

2/3 cup

white chocolate chips

marshmallow buttercream filling

1/2 cup

unsalted butter, softened

1 cup

marshmallow cream (homemade or store-bought is fine)

1/2 cup

powdered sugar

1 tsp

vanilla extract

1 pinch

salt