The bakery "Dietsche" is very popular and favoured among students. You can often hear that "Dietsche" makes the best pretzels around Rastatt.
But they have also other goodies, which are very delicious. The little bakery is really nicely decorated and has a good atmosphere. But they also sell only take-away food.
That's okay, because "Dietsche" is next to the marketplace and the centre of Rastatt. If you want to buy your food at a cosy place, then I think "Dietsche" is the best spot for you.