I have also used a couple that I found via Mr Google
Doughnut recipe (makes a LOT but I really like it, and the kids happily eat for at least a few days in their lunch)
1 tbsp cider vinegar
1 cup milk
3.5 cups plain flour
1 tbsp baking powder
1 tsp baking soda
0.5 tsp salt
2 tbsp butter
1 cup sugar
2 eggs
0.5 tsp vanilla
or
CHOCOLATE DONUTS (for donut machine) - I have edited this to grams for TMX
150g sugar
40g cocoa
1 tsp. baking soda
220g flour
1 egg
1 tsp. vanilla
100g oil
1/2 tsp. salt
120g boiling water
120g sour milk (to sour, add 1/2 tsp. vinegar or lemon juice)
For either it's just whizz it all together and pour into the donut machine