Latvian Donut with Cinnamon Sugar Coating

Method

1. In a large bowl, mix flour, sugar, baking powder, and salt.
2. In another bowl, whisk together milk, egg, oil, and vanilla extract.
3. Gradually add the wet ingredients to the dry ingredients, mixing until a soft dough forms.
4. Knead the dough on a floured surface for 5 minutes, then let it rest for 10 minutes.
5. Roll out the dough to 1/2 inch thickness and cut into rounds.
6. Heat oil in a deep fryer or large pot to 350°F (175°C).
7. Fry the donuts until golden brown, about 2-3 minutes per side.
8. Remove and drain on paper towels.
9. Dip the warm donuts in cinnamon sugar and serve.