Rocky Road Pancakes

Combine milk and vinegar in a large bowl. Set aside for 5 minutes.

Meanwhile combine flour sugar cocoa powder baking powder baking soda and salt in a medium bowl.

Whisk eggs butter and vanilla extract into the milk-vinegar mixture. Add flour mixture and whisk until no lumps remain. Gently fold in marshmallows and walnuts.

Heat a lightly oiled griddle over medium-high heat. Drop 1/3 cup of batter onto the griddle for each pancake; cook until tops begin to bubble 3 to 4 minutes. Flip and cook until browned on the other side 2 to 3 minutes. Repeat with remaining batter.