MAKE A DELICIOUS ALTERNATIVE TO THE USUAL BARBECUE BURGER. THESE GRILLED PORTOBELLO SANDWICHES GET ADDED FLAVOR FROM GRILLED ONIONS AND PEPPERS, ALL SMOTHERED IN TOMATO SAUCE AND PROVOLONE CHEESE. Ingredients 1 lb. Portobello mushrooms, sliced 1 onion, sliced thin 1 green bell pepper, Julienned 1 red bell pepper, Julienned 1/4 cup extra virgin olive oil […]