Mix the wet ingredients. In a medium bowl, whisk together the cottage cheese, eggs, maple syrup, vanilla extract, and lemon zest until well combined. Small cottage cheese curds can remain.
Add the dry ingredients. Add the flour, baking powder, and salt. Stir just until no dry streaks remain. The batter should be thick and scoopable rather than thin and runny.
Add the blueberries. Gently fold in the blueberries, taking care not to crush them or overmix the batter.
Heat the skillet. Heat a nonstick skillet or griddle over medium-low to medium heat. Lightly grease the cooking surface with butter or cooking spray.
Portion the batter. Scoop about 2 tablespoons of batter per pancake onto the skillet. Leave enough space between the pancakes to make flipping easy.
Cook the first side. Cook for 2–3 minutes, until the edges look set and the undersides are golden.
Flip and finish cooking. Carefully flip each pancake and cook for another 1–2 minutes, until the second side is golden and the center is cooked through. Reduce the heat if the pancakes are browning before their centers have time to set.
Finish the batch. Repeat with the remaining batter, lightly greasing the skillet again as needed. Serve warm.