Cracker Barrel Old Country Store Biscuits

I like these because they are so quick and easy. Even though you use Bisquick, they don't come out tasting like Bisquick or like baking powder. I always have to double the batch to make sure I get some!
Ingredients:

2 1/4 cups Bisquick
2/3 cup buttermilk
1 teaspoon sugar
1 tablespoon butter, melted
melted butter, for brushing

Directions:

Preheat oven to 450°F.
Mix the Bisquick, buttermilk and sugar together in a bowl.
Add the melted butter into the batter.
Stir until a soft dough forms.
Turn out onto a well floured work surface.
Knead 20 times (this is a very forgiving dough), and don't be afraid to get additional flour into the dough.
Roll 1/2 thick, or thicker if you prefer towering biscuits.
Cut out into 2" rounds (or your preferred size).
Place close together on an ungreased baking sheet.
Brush tops with melted butter.
Bake for 8 to 10 minutes; I usually find 8 minutes is enough.
When you remove the biscuits from the oven, brush the tops with melted butter again.