1. Butter a bundt pan. 2. Preheat oven to 350F. 3. Place butter, peanut butter, and swerve into a stand mixer bowl. Cream and aerate for about 3-4 minutes.  4. Add in eggs one at a time. Add coconut flour, vanilla, baking powder, cinnamon, and whisk. 5. Pour batter into the prepared bundt pan and bake for 30 minutes.