Mix the flours. Add margarine in small flakes. Dissolve 1/2 teaspoon salt in 100 ml lukewarm water. Add to the flour and knead everything into a smooth dough. If necessary add some more water.
Wrap in foil and let it rest for about 30 minutes. In the meantime, drain beans and corn, rinse with cold water and drain. Peel onion and garlic and dice finely. Wash the chillies, dab dry and carve lengthwise.
Afterwards also chop. Sauté together in hot oil. Add the mince and fry until crumbly. Season with salt. Add the beans, corn and salsa and heat briefly. Form 10-12 balls from the cornflour dough and roll out into thin, round flat cakes (approx. 20 cm Ø).
Bake in a lightly oiled pan until golden brown on both sides. Flip over and fill with the mince mixture. Garnish with green chillies as desired.