Combine the flour, sugar and baking powder in a large bowl. In a separate bowl, lightly beat the egg yolks, then add the milk, melted butter and vanilla and mix well. Add the wet ingredients to the dry ingredients and stir just until combined.

In another bowl, beat the egg whites with an electric hand mixer until stiff peaks begin to form. Gently fold the stiff egg whites into the batter. It's okay if there are still some streaks of egg white showing.

Cook in a preheated Belgian waffle iron until golden brown. Top with freshly whipped sweet cream, berries, and if you are really going for it - some nutella.