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1 tablespoon oil
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1 boneless beef bottom round roast or beef chuck pot roast (1 1/2 to 2 pounds)
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1/2 cup (1 stick) butter
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1 large onion, sliced (about 1 cup)
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2 medium red or green pepper, cut into 2-inch strips (about 3 cups)
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1 clove garlic, minced
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2 stalks celery, chopped (about 1 cup)
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8 green onion, chopped (about 1 cup)
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1 can (10 3/4 ounces) Campbell's® Condensed Golden Mushroom Soup
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1/2 teaspoon browning and seasoning sauce (such as Kitchen Bouquet®)
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2 tablespoons Worcestershire sauce
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1 can (4 ounces) sliced mushrooms, drained
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