In a deep-fryer or in a large deep pan on stove top; heat oil to 350°F. Line a rimmed baking sheet with paper towels; set aside. Place sugar in a shallow bowl; set aside.

In a medium mixing bowl, add both Buttermilk Biscuit Mixes and dry pudding mix; stir to combine.

In a small bowl whisk egg, add milk and whisk to combine. Pour mixture into dry biscuit-pudding mixture; stir to combine.

Using a 1-inch cookie scoop carefully drop donut dough into oil, do not overcrowd pan, fry until done, about 2 minutes, turn during frying.

Remove from oil with a large slotted spoon and place on paper towels to drain and cool, roll in sugar and serve.