Whisk 2 cups flour, 1/4 cup confectioners' sugar, 2 teaspoons baking powder, 1/2 teaspoon salt and 1/4 teaspoon baking soda in a large bowl. Whisk 1 1/2 cups milk, 1 1/2 sticks cooled melted butter and 2 eggs in a separate bowl until combined; pour into the flour mixture and stir until just combined. (A few small lumps are fine.) Preheat a waffle iron; lightly brush with butter, then fill with batter three-quarters full and cook until the waffles are golden and crisp.
Sesame, Scallion and Sausage
Add 1 bunch thinly sliced scallions, 3 thinly sliced dried Chinese sausages and 2 teaspoons each toasted sesame oil, sesame seeds and grated ginger to the batter. Top the waffles with a fried egg.
Smoked Salmon and Chives
Reduce the milk to 1 1/4 cups and add 1/2 cup sour cream. Add 4 ounces chopped smoked salmon, 1/4 cup minced chives and 2 tablespoons chopped tarragon to the batter. Top the waffles with more sour cream and chives.
Bacon and Almond
Add 8 chopped cooked bacon slices, 1/2 cup finely chopped marcona almonds and 2 teaspoons each ancho chile powder and chopped thyme to the batter. Top the waffles with maple syrup.
Goat Cheese and Kale
Add 4 ounces crumbled goat cheese, 1 cup finely chopped kale, 2 tablespoons chopped mixed herbs (parsley, basil and dill), 1 teaspoon grated lemon zest and 1/4 teaspoon cayenne pepper to the batter. Top the waffles with arugula salad.
Replace 1 cup of the flour with cornmeal. Add 1 cup each thawed frozen fire-roasted corn and shredded pepper jack cheese, 1/4 cup chopped cilantro and 1 minced seeded jalapeno to the batter. Top the waffles with honey and hot sauce.
Add 1/2 cup each shredded provolone and grated parmesan, 2 ounces finely chopped salami and 1 teaspoon pepper to the batter. Top the waffles with ricotta and olive oil.