In a large mixing bowl, combine the instant pancake mix with water. Follow the package instructions for the correct water-to-mix ratio, adjusting as needed to achieve a smooth batter.
Gently fold the blueberries into the batter, being careful not to overmix to maintain the pancake's fluffiness.
Preheat a non-stick skillet or griddle over medium-high heat. Lightly grease the surface with cooking spray or butter.
Pour or scoop the batter onto the hot skillet, using about 1/4 cup for each pancake. Spread the batter slightly for even cooking.
Cook the pancakes until bubbles form on the surface and the edges look set, about 1-2 minutes. Flip and cook the other side until golden brown and cooked through, approximately another 1-2 minutes.
Serve the pancakes hot, garnished with additional blueberries and your favorite toppings like maple syrup, honey, or whipped cream.