"This delicious Cauliflower Au Gratin Casserole is a perfect low carb casserole for weeknight and holiday dinners...."
INGREDIENTS
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2 large heads cauliflower (stems removed and separated into evenly-sized florets)
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1 cup 2 sticks unsalted butter
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2 cups heavy cream
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3 cups sharp cheddar cheese (divided)
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1 ½ cups cooked and crumbled bacon
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Sliced green onions (garnish)