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1
Make dough and refrigerate at least 1 hour.
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2
Heat the oven to 425 degrees F and arrange the rack in the center.
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3
Melt butter over medium-high heat in a 12-inch cast iron skillet or other large, heavy oven-safe pan.
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4
Add brown sugar, coffee, cinnamon stick, and lemon zest, stirring continuously until mixture boils.
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5
Reduce heat to medium low and simmer, stirring frequently, until sugar is completely melted and mixture is thick and syrupy, about 5 minutes.
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6
Remove cinnamon stick and lemon zest and discard.
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7
Stir in vanilla extract and remove the skillet from heat.
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8
Peel bananas and cut on the bias into 1/2- to 3/4-inch-thick slices.
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9
Add banana slices and lemon juice to syrup mixture and stir gently to coat thoroughly.
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10
If desired, arrange banana slices in a decorative pattern.
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11
On a lightly floured surface, use a rolling pin to roll dough into a round that is just larger than the skillet.
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12
Lay it over the banana filling, tucking overhanging dough around the sides.
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13
Prick dough with a fork in several places.
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14
Bake until crust is puffed and golden and filling is bubbling around the edges, about 25 minutes.
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15
Remove from the oven and let sit on a wire cooling rack for 15 minutes.
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16
Run a spatula around the perimeter of the tart and place a rimmed platter that is slightly larger than the cast iron skillet upside down over the pan.
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17
Flip the skillet and plate over to invert the tart.
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18
Slice the warm tart into wedges and serve with ice cream.