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1
Preheat the oven to 350 degrees F.
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2
Melt the butter in 9 to 10-inch cast iron skillet (or oven safe pan) over medium/high heat and add sugar.
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3
Gently stir until sugar starts to turn brown, about 3 to 5 minutes.
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4
Be careful not to burn the sugar, as it will continue to cook since the pan is hot.
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5
Bring the heat to low then arrange the apples, skin side down, neatly.
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6
Make sure the pan is well packed with apples.
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7
Cook for few minutes.
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8
Cover the pan with pie dough and cut the dough along the pan leaving about 1-inch overhang.
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9
Fold the overhang inside the pan.
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10
Put the pan in the oven for about 20 minutes.
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11
After cooking, leave the tartin in the pan for about 5 minutes.
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12
Cover the pan with serving plate and flip the pan over and voila!
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13
Serve hot with creme fraiche on the side or ice cream.