Preheat oven to 350°F (175°C). Grease your doughnut pan like it’s the main event.
In a mixing bowl, whisk flour, sugar, baking powder, soda, cinnamon, and salt. Try not to inhale the spice.
In another bowl, stir coffee, plant milk, oil, vanilla, and vinegar until combined. It should smell like ambition.
Pour the wet mix into the dry mix. Stir just until it looks like cake batter with dreams.
Fill the doughnut pan ¾ of the way. Bake for 14–15 minutes, or until golden and slightly springy.
Remove from oven. Cool in the pan for 5 minutes, then transfer to a rack. Breathe in that aroma.
For the cream, whip chilled coconut cream with syrup, cinnamon, and vanilla until fluffy like gossip at brunch.
Pipe or spoon the cinnamon cream into cooled doughnuts. Don’t rush—you earned this.
Optional: sprinkle extra cinnamon on top because drama belongs in the details.
Serve immediately or chill for 30 minutes if you like firm cream and firm boundaries.