01 - Whisk together flour, sugar, baking powder, baking soda, salt, and cinnamon in a large bowl until thoroughly combined.
02 - Whisk milk, eggs, melted butter, and vanilla extract in a separate bowl until fully blended.
03 - Pour wet ingredients into dry ingredients and stir until just combined. Avoid overmixing. Allow batter to rest for 5 minutes.
04 - Heat a non-stick skillet or griddle over medium heat. Lightly grease with butter.
05 - Pour 1/4 cup batter per pancake onto griddle. Cook until surface bubbles form, then flip and cook until golden brown, approximately 2 to 3 minutes per side.
06 - Combine 1/4 cup sugar with 2 teaspoons cinnamon in a small bowl, mixing thoroughly.
07 - Brush warm pancakes lightly with melted butter if desired, then coat both sides with cinnamon sugar mixture.
08 - Place chopped chocolate and cream in a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until smooth and glossy.
09 - Stack pancakes and drizzle with chocolate sauce or serve sauce alongside for dipping.