Heat one cup of milk in a saucepan, and add the sugar, salt and butter. Bring to a simmer until the butter is fully melted, then remove from the heat.
Add the flour, beating with a wire whisk. Return the mixture to the heat, stirring constantly until the mixture comes away from the sides of the bowl.
Pour the mixture into the bowl of an electric mixer using the whisk attachment, or use a hand mixer with a large bowl. Beat the batter on low, until slightly cooled. Add the eggs, two at a time, beating well after each addition. Beat the remaining milk, cream, and vanilla extract into the egg mixture. The batter will be thin an very lumpy and you will wonder how it could ever produce anything delicious.
Heat up your waffle iron and, once hot, spray it with some cooking spray. Pour the appropriate volume of waffle batter into your hot waffle iron (ours needed about a half cup of this very runny batter). Cook according to your waffle iron's instructions.
Remove the waffle with a fork and top with tasty treats. If you're hosting a waffle frolic, place waffles on a rimmed baking sheet in a warm oven (heated to about 150 F) to keep warm until you're ready to serve.