I haven't bought Bisquick (or any other pancake mix) in years; it isn't hard to make pancakes from scratch! This recipe came from my mother-in-law, Ruth.
1 c flour
1/2 tsp salt
1/2 tsp baking soda
1 T sugar
1 c buttermilk
2 T melted butter
Combine dry ingredients in large bowl. Add egg, buttermilk, and melted butter. Mix with a wire whisk until combined; don't over-mix. Cook on a hot griddle; flip over when tiny bubbles begin to pop on the top.
You can get away with not using real buttermilk if you don't have it... just put about half a tablespoon of vinegar or lemon juice into a 1-cup measure, then fill up with milk, and there you have it... "fake" buttermilk. These pancakes taste fine either way but of course the real thing is always a little bit better!
I like to let the batter sit for a few minutes before I start cooking the pancakes. I can't explain why; I just feel like it needs to rest for a minute first and they turn out better. So, what I usually do is mix up the batter first and then let it sit while the griddle is heating up.
Occaionally I use 1/2 white flour and 1/2 whole wheat flour when I make these, in an effort to be more healthy. The consistency can be a little different, depending on the freshness of your flour; I usually have to add a little more buttermilk to mine when I use the whole wheat flour. Tonight for dinner I made some with blueberries... not all of my family were eager to try the blueberry variety so after mixing up a triple batch with 1/2 white & 1/2 wheat flour, I put about a third of the batter into a smaller bowl and added about a cup of fresh blueberries. Wow were they tasty!