"This skillet-supper version of the classic is quicker and easier to make. This hearty comfort food easily functions as the main dish for vegetarians. Featured in: Vegetarian Comfort Food At Thanksgiving...."
INGREDIENTS
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grated Cheddar
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finely grated Parmigiano-Reggiano
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unsalted butter
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small yellow onion, chopped
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cremini
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unbleached all-purpose flour
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low-fat or fat-free milk
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Dijon mustard
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minced tarragon leaves
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salt
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freshly ground black pepper
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dried whole-wheat pasta shells
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small broccoli florets