INGREDIENTS
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2 tablespoons canola oil
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1 1/2 cups frozen vegetables
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1 small yellow onion, chopped
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1 (14 ounce) box refrigerated pie crust
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2 (10 3/4 ounce) cans condensed cream of mushroom soup
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1 egg, beaten
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2 (5 ounce) cans solid white tuna, drained