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 stir gently until just combined. Avoid overmixing to ensure fluffy texture. Let batter rest for 5 minutes.
04 - Heat a non-stick skillet or griddle over medium heat. Lightly grease the surface with butter to prevent sticking.
05 - Pour 1/4 cup of batter per pancake onto the griddle. Cook until bubbles form on the surface and edges appear set, 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 until evenly blended.
07 - While pancakes are still warm, brush lightly with melted butter if desired, 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 melted and smooth.
09 - Stack coated pancakes and drizzle with warm chocolate sauce, or serve sauce alongside for dipping.