Whisk together 1 1/4 cups buttermilk and cornmeal. Stir in butter and microwave for 90 seconds. Stir, cover and let sit for 5 minutes.
Combine flour, sugar, baking powder, baking soda and salt in a large bowl. Beat eggs and remaining buttermilk together and whisk into cornmeal mixture.
Whisk cornmeal/egg mixture into flour mixture and let sit for 10 minutes.
Grease a nonstick skillet or griddle with vegetable oil and heat over medium heat. Scoop 1/4 cup amounts of batter onto skillet and cook for two minutes per side, until pancakes are golden and set.