portobello burger w/ roasted pepper paste and smoked mozzarella

Ingredients

• 2 tablespoons olive oil, extra virgin (evoo)
• 1/8 cup balsamic vinegar
• 1 teaspoon dried oregano
• 4 large portobello mushroom caps
• 1/2 teaspoon kosher salt
• 1/2 teaspoon pepper
• 1/2 pound smoked mozzarella, sliced into 4 equal pieces
• ROASTED PEPPER PASTE:
• 1-14 ounce jar roasted red peppers-drained
• 1 - drizzle olive oil-extra virgin (evoo)
• 1 - handful flat leaf parsley leaves
• 1 large clove garlic-cracked away from skin
• - salt & pepper
• 4 large crusty rolls-split
• SUGGESTED TOPPINGS
• - whole baby spinach leaves-i used lettuce
• - thin sliced red onions