01 -
In a medium bowl, whisk together flour, baking powder, salt, sugar, and cinnamon.
02 -
In a separate bowl, whisk together milk, eggs, melted butter, and vanilla extract.
03 -
Add the wet ingredients to the dry ingredients and mix until just combined; do not overmix.
04 -
Heat 2 inches of vegetable oil in a deep pot to 350°F (175°C).
05 -
Using a small cookie scoop or tablespoon, carefully drop spoonfuls of batter into the hot oil, frying in batches. Fry for 2–3 minutes, turning occasionally, until golden brown and cooked through.
06 -
Remove donut holes with a slotted spoon and drain on paper towels.
07 -
While still warm, roll the donut holes in a mixture of cinnamon and sugar until fully coated.
08 -
In a small bowl, whisk together peanut butter, milk, powdered sugar, vanilla extract, and a pinch of salt until smooth and creamy. Add a bit more milk if needed to reach your desired consistency.
09 -
Serve the cinnamon sugar donut holes warm with the peanut butter dip on the side.