In a large mixing bowl, combine the eggs, milk, oil, vanilla, sugar, and salt. It is best to do this with an electric hand mixer so that everything is creamy. Or, use a whisk.

Add the flour and baking powder and mix again until you get a smooth batter.

Spoon the batter into each donut cup. Place the pans inside the oven and bake for 7 to 10 minutes until golden brown. Test the donuts by inserting a toothpick into the center of one. If it comes out clean, the donuts should be cooked through.

Remove the donut pans from the oven and place them on a wire rack to cool. Meanwhile, whisk together the remaining sugar and the cinnamon in a small, shallow bowl.

Once the donuts are just cool enough to handle but still a little warm, remove them from the pans, using a silicon spatula if necessary. Dip them in the cinnamon and sugar on all sides. Place them back on the wire rack to continue to cool.

Enjoy for breakfast, or place candles in them for a fun spin on a birthday cake.