Combine your flour, baking powder, baking soda, salt and sugar in a bowl.
Slowly add the buttermilk. Now, add the heavy cream. If using just milk, add that in like the buttermilk. Whisk it all together.
Add the egg and vanilla extract. Whisk this together with rest of the ingredients.
The batter should be a little runny. Not thick like pancake batter but a little thinner. If your batter is thick, just add a little buttermilk/milk in 1 tbsp increments.
Turn on your waffle maker. Most have a light when it's ready. Once it turns green, it's ready to go.
With a 1/2 cup measurement cup, scoop the batter up and pour it into the center of the waffle iron. Make sure not to add too much or it will over spill on the sides of your waffle maker.
Close the lid of the waffle maker. Once you see the green light, they are ready to remove.
Top with butter and warm syrup. Ilove serving these with fruit, bacon and scrambled eggs.