Whisk 1 1/2 cups flour, 1/4 cup unsweetened cocoa powder, 3/4 teaspoon baking soda and 1/2 teaspoon salt in a medium bowl. In a large bowl, beat 1 1/4 sticks softened butter and 1 cup light brown sugar with a mixer on medium-high speed, 4 minutes. Beat in 1 egg and 1 teaspoon vanilla. Beat in the flour mixture on low speed. Stir in 3/4 cup chocolate chips and 1/2 cup each white chocolate chips and crushed freeze-dried raspberries. Roll into 1 1/2-inch balls; arrange on parchment-lined baking sheets and bake at 375˚ F until set, 12 to 15 minutes.