Beat eggs in a bowl until thick. Add milk, butter, and vanilla and beat for 2 minutes. Combine remaining ingredients (except for fruit or confectioners’ sugar), sift into egg mixture, and beat well. Batter should be thick but pourable; add additional milk if necessary.
Butter waffle iron, heat, and pour batter onto hot iron. Serve with sliced bananas and strawberries; blueberries and sliced peaches; poached pears and cranberries; or sliced apples and cinnamon. Or brush waffles with melted butter and sprinkle with confectioners’ sugar before serving.