Beat the egg whites and a little salt with the whisk of the hand mixer until stiff. Gradually add icing sugar and vanilla sugar while stirring constantly. Set aside a cup of the meringue mixture (approx. 1/3 of the amount) covered.
Work under the remaining meringue cinnamon, ground almonds and flour. Form balls about the size of walnuts and place them on two baking trays lined with baking paper. Using a teaspoon, place a small blob of the meringue mixture set aside on each ball.
Cover with an almond. Let the cinnamon balls dry for about two hours at room temperature. Bake in the preheated oven (electric oven 150 ° C / gas: level 1) for 20 to 25 minutes. Results in 50 pieces.