Instructions

1. Preheat oven to 400°F. Grease a standard sized donut pan and set aside.
2. In a large bowl, mix together flour, brown sugar, baking soda, baking powder, and salt. In a small bowl, whisk egg, vegetable oil, buttermilk, and vanilla extract. Add the wet ingredients to the dry, whisking to combine. Mixture will be slightly lumpy and thick.
3. Spoon batter into donut molds, filling all the way to the top of the molds. Bake for 10 minutes, or until a knife inserted into the donut comes out clean. Allow to cool for 10 minutes.
4. Spoon the jelly into a piping bag fitted with a 1/2 inch in diameter tip. Stick the tip into one side of the donut at an angle.* Squeeze the jelly slowly and stop when the donut begins to expand. Do this on the other side of the donut, as well.
5. To make the frosting, combine all ingredients in a small bowl, whisking until smooth. The consistency should be thick but still thin enough to form ribbons when you scoop it from the bowl and back down. Dip each jellied donut into the frosting and top with chopped peanuts. Devour.