Orange Almond Muffins

Beat the eggs, sugar, vanilla sugar, orange zest and oil until creamy. Mix the flour, baking powder, ground almonds and chopped almonds. Alternately stir the milk and flour mixture into the egg mixture. Pour the batter into a greased muffin tray. Bake for about 15 minutes. Place the candied orange slices on the muffins and bake for another 10 minutes. Remove from the oven, cool and serve.