Give a classic casserole a facelift by stirring in portabella mushrooms and water chestnuts. Then top with French-fried onions.
To save time, substitute 1 jar (6 oz) sliced mushrooms, drained, for the fresh mushrooms. Omit the butter and browning step.
Add color by sprinkling 1/2 cup of diced roasted red bell peppers over the broccoli layer.
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