Place the all-purpose flour, baking powder, baking soda, granulated sugar, ground cinnamon, and pumpkin spice blend in a large mixing bowl. Whisk until the dry ingredients are evenly distributed.
Create a well in the middle of the flour mixture. Add the egg, milk, pumpkin purée, vegetable oil, and vanilla bean paste.
Stir only until the wet and dry ingredients come together. Avoid excessive mixing, as a lightly mixed batter helps produce tender, fluffy pancakes.
Set the finished batter aside while preparing the cinnamon mixture.
Combine the softened unsalted butter, granulated sugar, and ground cinnamon in a medium bowl.
Stir 1 tablespoon of the prepared pumpkin pancake batter into the cinnamon mixture, blending until the consistency is smooth and uniform.
Spoon the mixture into a piping bag, then trim a small opening from the tip. Reserve until the pancakes are ready to cook.
Place a pancake pan over medium heat and allow it to warm for approximately 5 minutes. Lightly coat the cooking surface with unsalted butter.
After the butter has melted, portion approximately 1/4 cup of pumpkin batter onto the heated pan for each pancake.
Immediately pipe the cinnamon-sugar mixture in a spiral pattern across the top of each portion of batter.
Allow the pancakes to cook for roughly 1–2 minutes, or until small bubbles begin appearing on the surface.
Pour approximately 1 small teaspoon of water along the edge of the pan and promptly cover it with a lid. Steam the pancakes for an additional 1–2 minutes. This technique cooks the pancakes through without requiring them to be flipped, helping preserve the cinnamon swirl pattern.
Continue with the remaining batter and cinnamon mixture, lightly buttering the cooking surface between batches as necessary.
Transfer the finished pancakes to a wire rack briefly after cooking to prevent excess moisture from making the bottoms soggy.
Add the softened unsalted butter, powdered sugar, ground cinnamon, honey, vanilla bean paste, and sea salt to a mixing bowl.
Beat the ingredients together until the butter becomes smooth, airy, and thoroughly combined.
Transfer the cinnamon butter to a piping bag fitted with a star-shaped decorating tip.
If desired, incorporate a small additional drizzle of honey for greater gloss and sweetness.
Arrange the warm pumpkin pancakes for serving.
Pipe the prepared cinnamon butter over the top of the pancakes while they are still warm.
Serve immediately for the best texture and presentation.