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1
Adjust oven rack about 5 inches from heating element and set oven to broil.
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2
Whisk eggs, half-and-half, 1/4 teaspoon salt, and 1/4 teaspoon pepper together in bowl until combined. Stir in 1/4 cup cheese.
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3
Microwave spinach in large microwave-safe bowl, covered with plastic wrap, on high power until wilted, about 90 seconds. Transfer spinach to clean dish towel and squeeze out excess liquid.
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4
Microwave potatoes in now-empty bowl, covered with plastic wrap, on high power until tender, about 5 minutes.
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5
Meanwhile, fry bacon in medium nonstick ovensafe skillet over medium heat until crisp, about 6 minutes. Transfer bacon to plate lined with paper towel and pour off all but 1 tablespoon fat from skillet.
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6
Add potatoes to skillet and cook until golden brown, about 5 minutes.
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7
Add spinach, bacon, and egg mixture and cook, using rubber spatula to stir and scrape bottom of skillet, until large curds form but eggs are still very wet, about 2 minutes.
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8
Shake skillet to distribute eggs evenly and cook, without stirring, until bottom is set, about 30 seconds.
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9
Sprinkle remaining cheese over top.
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10
Broil until surface is spotty brown, 3 to 4 minutes (eggs should be slightly wet and runny inside). Remove from oven and let stand 5 minutes to finish cooking.
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11
Slide frittata onto platter and cut into wedges.
