INGREDIENTS
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2 medium yellow summer squash, diced
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1 large zucchini, diced
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1/2 pound sliced fresh mushrooms
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1 cup chopped onion
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2 tablespoons olive oil
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2 cups shredded cheddar cheese
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1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
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1/2 cup sour cream
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1/2 teaspoon salt
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1 cup crushed butter-flavored crackers (about 25 crackers)
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1 tablespoon butter, melted