Hot Antipasto Heros

Ingredients

• 24 inch loaves bread italian
• 0.5 cup olive paste store-bought
• 0.3 cup olive oil 
• 2 small onions halved lengthwise thinly sliced
• 0.5 teaspoon oregano crumbled
• 8  bottled pepperoncini drained chopped (pickled Tuscan peppers, available at most supermarkets)
• 1  bell pepper diced red seeded
• 1.3 cups genoa salami smoked diced (or a combination)
• 1.5 cups whole-milk mozzarella shredded
• 1 tablespoon plus 1 teaspoon red wine vinegar 

Equipment

• bowl
• frying pan
• oven
• serrated knife

Directions

1. Preheat the oven to 450 degrees F.
2. In a heavy skillet, cook the onion and bell pepper in the oil over moderately low heat, stirring occasionally, until it is softened. While the onion and pepper are cooking, in a bowl stir together the salami, mozzarella, pepperoncini, oregano, and vinegar.
3. Add the onion-pepper mixture.
4. Cut each piece of bread horizontally with a serrated knife without slicing all the way through, remove some of the soft inner white bread, and arrange the bread pieces cut sides up in a jelly-roll pan.
5. Spread the bread with the olive paste.
6. Spread the antipasto mixture on both sides of each piece of bread and bake the heros in preheated oven for 5 minutes. Season the heros with salt and pepper and re-form them, pressing the 2 sides together.