4 Portobello mushrooms, cleaned, stems removed
1/2 cup olive oil
1 bell pepper, finely diced
1 red onion, finely diced
1 zucchini, finely diced
1 yellow squash, finely diced
4 tablespoons Worcestershire sauce
Preheat oven to 375 degrees F.
Remove and discard all of the stems from the Portobello mushrooms and place in a baking dish.
In a separate bowl, combine all of the remaining ingredients and mix well. Place a large spoonful of the mixture on top of each mushroom. Place in oven and bake for 20 minutes.
Serve on a bed of lettuce or on a platter and drizzle the Worcestershire sauce around mushrooms.
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