01 - Whisk together flour, sugar, baking powder, baking soda, salt, and cinnamon in a large bowl until thoroughly combined.
02 - In a separate bowl, whisk milk, eggs, melted butter, and vanilla extract until smooth and fully incorporated.
03 - Pour wet ingredients into dry ingredients and mix gently until just combined. The batter should remain slightly lumpy. Allow to rest for 5 minutes.
04 - Heat a non-stick skillet or griddle over medium heat. Lightly grease with additional butter.
05 - Pour 1/4 cup batter per pancake onto the heated surface. Cook until bubbles form across the surface and edges appear set, approximately 2-3 minutes. Flip and continue cooking until golden brown, an additional 2-3 minutes.
06 - Combine granulated sugar and cinnamon in a small bowl, mixing until evenly distributed.
07 - Brush warm pancakes lightly with melted butter, then generously dust both sides with the cinnamon sugar mixture.
08 - Place chopped chocolate and cream in a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until completely smooth and glossy.
09 - Stack coated pancakes on serving plates. Drizzle warm chocolate sauce generously over the top or serve alongside for dipping.