• Whisk the egg, oil, milk, sugar, baking powder, and salt in a large bowl until smooth.
• Add the first cup of flour and whisk until combined. Add the remaining flour and whisk until a smooth dough remains. Gently knead the dough in the bowl until smooth. 
• Transfer the dough onto a floured surface and knead several more times. 
• Using a rolling pin, flatten the dough until it is an inch thick. Using a donut or cookie cutter, cut out portions of dough in the donut shape. 
• Add about 2 inches of oil to a deep pot and place it over medium heat. Once it reaches 375F, add a few of the donuts to the hot oil. Fry for two minutes per side. 
• Drain the donuts on a paper towel and repeat the process until all the donuts are fried. 
• Make the glaze by whisking the powdered sugar with milk. if the glaze is too thick, add an extra drop of milk until glossy.
• Dip the donuts in the glaze, then transfer them onto a wire rack until firm.

Oven instructions

• Preheat the oven to 180C/350F. Coat a 12-count donut pan with cooking spray and set aside. 
• Prep the donuts as instructed.
• Bake for 12-15 minutes, or until just done, and a skewer comes out just clean. Allow cooling in the pan for 5 minutes, before transferring to a wire rack to cool completely. 
• Once cool, dip each donut in the glaze.