Preheat oven to 350 degrees Farenheit.
In a medium sized bowl, mix together the oats, flour, baking powder, baking soda, powdered vanilla, salt, cinnamon, and ginger. Mix well until fully combined.
1½ cups (150 grams) oats, 3/4 cup (110 grams) all purpose flour, 1/2 teaspoon baking powder, 1/2 teaspoon baking soda, 1 teaspoon vanilla, 1/2 teaspoon salt, 1/2 teaspoon ground cinnamon, 1/4 teaspoon ground ginger
In the bowl of a stand mixer, combine the butter with the brown sugar and granulated sugar. Using the paddle attachment of the stand mixer, mix until well combined. Add the egg and beat well. Mix for 2 – 3 minutes.
1/2 cup (115 grams) butter, 1/2 cup (100 grams) brown sugar, 1/3 cup (67 grams) granulated white sugar, 1 egg
Add the oat and flour mixture to the bowl of the stand mixture and beat all ingredients together until well combined. Stir in the chocolate chunks.
1 cup (175 grams) chocolate chunks, or chocolate chips
Form a ball of cookie dough using two tablespoons worth of dough in your hands. Press to flatten slightly and place on a parchment lined cookie sheet. Repeat, leaving 2 inches between each cookie.
Bake in the middle rack of your oven for 12 minutes. Remove baking tray from oven and allow the cookies to cool for 1 – 2 minutes before transferring them to a cooling rack to cool completely.
Once your cookies are cooled it is time to assemble your ice cream cookies. Try to find pairs of cookies which are most similar in size and shape (all the cookies should be pretty similar in fact). Place a 1 inch layer of ice cream on the bottom side of one cookies and spread it out, being careful not to break your cookie. Top with a second cookie. Serve immediately, or wrap tightly in plastic wrap and place in freezer for later.
Enjoy!