Preheat oven to 350 degrees and spray a 6 cavity donut pan with pam baking spray
In a large bowl, combine the flour, sugar, baking powder, salt and whisk until combined
In a large bowl, whisk together the milk, eggs, butter, mint extract and green food coloring
Gradually whisk in the dry ingredients into the wet until combined
Fold in the mini chocolate chips
Scoop into disposable piping bag
Cut the tip off and pipe batter into the donut cavities
Bake in the oven for 10-12 minutes or until slightly golden brown
Remove from oven and allow to cool for 5 minutes
Remove from pan and place onto the wire rack