Preheat oven to 350° F. Line a baking sheet with parchment paper and set aside.
In a medium bowl, whisk together the flour, baking soda and salt. Set aside.
In the bowl of a stand mixer fitted with a paddle attachment, beat on medium speed the butter, brown sugar and granulated sugar until light and fluffy, about four minutes. Scrape down the sides of the bowl when necessary. Add the egg and vanilla. Beat until combined, 20 to 30 seconds.
With the mixer on low, slowly add the flour mixture to the dough. Careful not to over beat. With a wooden spoon or rubber spatula, stir in the chocolate chips by hand.
Scoop about 2 tablespoons of cookie dough, shape into a ball, and place onto the prepared baking sheet. Repeat placing each ball of cookie dough about 1- to 2-inches apart. Bake for about 12 minutes or until the edges start to turn brown. Cool on the pan for 5 minutes and then transfer to a wire rack to cool completely. Transfer to the freezer for 20-30 minutes.
Ice Cream Sandwich Assembly
Take one cookie and place a scoop of ice cream (about 1/4 cup) on the flat side of the cookie. Top with flat side of second cookie to make a sandwich.
Place mini chocolate chips in a bowl or on plate. Roll sides of the sandwich in the chips. Serve immediately or wrap tightly in plastic wrap and freeze.
*Transferring the chocolate chip cookies to the freezer is essential. If you try to make the sandwiches with warm or room temperature cookies, the cookies will break when you press the ice cream between them. You will also get chocolate chips all over your hands!Storing homemade chipwiches: Once you have assembled the ice cream sandwiches, let them harden in the freezer for an hour. Then, individually wrap them in plastic wrap or place in reusable storage bags. Chipwiches will keep in the freezer for up to a month.