To make the peanut butter fudge, bring the sugar and milk to a boil and simmer for about 2 1/2 to 3 minutes. Remove from heat and stir in peanut butter and vanilla sugar until well blended. Let cool briefly.
Meanwhile, line a mold (about 15 x 15 cm) with baking paper, then pour in the mixture and let cool. Cut the fugde into pieces of about 2 x 3 cm. The mass is enough for about 30 – 35 pieces.