Prepare the wet ingredients: In a large mixing bowl, whisk together the buttermilk, melted butter, eggs, and sugar until well combined.
Sift dry ingredients: In another bowl, sift together the all-purpose flour and baking powder to ensure there are no lumps.
Combine mixtures: Gradually add the dry mixture into the wet ingredients while stirring gently until just combined. Be careful not to overmix; some lumps are okay!
Add blueberries: Gently fold in fresh or frozen blueberries into the batter. This will help distribute them evenly throughout the mixture without breaking them apart.
Heat the skillet: Preheat a non-stick skillet or griddle over medium heat. Lightly grease it with butter or oil before pouring in batter.
Cook pancakes: Pour 1/4 cup of batter onto the skillet for each pancake. Cook until bubbles form on top (about 2-3 minutes), then flip them over and cook for another 1-2 minutes until golden brown.
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