Preheat oven to 325F and grease or line an 8x8 baking pan with parchment paper
Place softened butter in a large mixing bowl with the brown sugar and granulated sugar. Mix with an electric hand mixer or stand mixer until fully combined and fluffy.
Add in the egg and extracts and mix again.
In a separate bowl mix together the all purpose flour, baking soda and salt. Pour the dry ingredients into the wet and mix again with electric mixer until fully combined
Pour the chocolate chips, white chocolate chips and sprinkles into the bowl and fold in with a spatula
Pour the batter into the baking pan and press down into a flat layer. Use an extra piece of parchment paper or greased spatula to do this
Bake at 325F for 28-30 minutes. Cool completely before cutting into squares and enjoying. If you cut before they are cool, they are more likely to fall apart.
Notes
Use gluten free flour blend in place of all purpose