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1
Preheat the oven to 350 degrees F.
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2
Lightly spray a 9 by 13 inch pan with nonstick spray, then add the butter.
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3
Place the pan in the preheated oven for a minute or so to melt the butter, then take it out and carefully tilt it in all directions to let the butter coat the bottom.
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4
Set aside.
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5
Place a 10 inch skillet over medium heat and wait a few minutes.
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6
Add the olive oil, wait about 10 seconds, then swirl to coat the pan.
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7
Add the onions, saute` for 5 minutes, then stir in the salt and the cauliflower.
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8
Saute` over medium heat for 8 to 10 minutes, or until the cauliflower is just tender.
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9
Transfer this mixture to the prepared pan.
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10
While the cauliflower is cooking, combine the eggs, milk, flour, and cheese in a blender.
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11
Whip into a smooth batter and pour it over the cauliflower mixture in the pan.
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12
Bake in the center of the oven for 35 to 40 minutes, or until puffed and golden.
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13
Serve hot or warm, cut into squares.