Pre heat oven to 425 degrees
Grease muffins tins with liberally with extra butter.
Mix cornmeal mix, baking powder, egg, 1/4 cup melted butter and buttermilk until just combined- do NOT over mix.
Gently spoon cornmeal batter into muffin tins until 3/4 full.
Dot remaining 2 TBSP of butter over top of batter.
Bake for 15 minutes until tops are deep yellow and bottoms are golden brown.