Peel and dice the onion and sauté in a saucepan with oil. Add the tomato paste and sauté briefly. Deglaze with the broth and cook for about 10 minutes. Season with salt, pepper, chilli and oregano to taste.
Preheat the oven to 200 ° C top and bottom heat or 175 ° C convection.
Cut the mini salami into thin slices, drain the corn.
Cut the rolls open, spread the sauce on them, place the salami and corn on them and sprinkle with cheese. Place the baguettes on a baking sheet lined with baking paper and bake for about 6 minutes (may vary depending on the oven.