Baked Brown Butter Churro Doughnuts. You need a donut baking pan to get them this great shape, but you might be able to get some weird-but-tasty ones on a regular baking sheet. And they taste like CHURROS.
Adding the cornstarch lowers the protein content of the flour, making it more like cake flour. If you don't have cornstarch then by all means, just add an extra cup of all purpose flour (for a total of 2 cups) instead.