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1
Combine all ingredients in blender.
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2
Blend until smooth.
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3
DO AHEAD: Crepe batter can be made 4 hours ahead.
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4
Cover and refrigerate.
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5
Reblend before using.
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6
Line plate with paper towel or parchment paper.
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7
Heat 9-inch-diameter nonstick skillet with 7-inch-diameter bottom over medium heat.
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8
Add 2 tablespoons crepe batter to skillet; tilt and swirl skillet to spread batter evenly over bottom.
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9
Cook until center of crepe is cooked through and edges are lightly browned, about 1 minute.
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10
Run spatula around crepe and invert onto prepared paper-towel-lined plate.
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11
Repeat with remaining batter, placing paper towels or parchment paper between crepes.
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12
DO AHEAD: Can be made 1 day ahead.
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13
Cover and refrigerate.
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14
Using electric mixer, beat sugar, butter, and salt in medium bowl until fluffy, about 2 minutes.
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15
Gradually add rum and beat until well blended.
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16
DO AHEAD: Can be made 1 day ahead.
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17
Cover and refrigerate.
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18
Melt butter in large nonstick skillet over medium-high heat.
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19
Add pineapple to skillet and scrape in seeds from vanilla bean; add bean.
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20
Add sugar and salt; stir until sugar dissolves and pineapple and pan juices are lightly browned, about 4 minutes.
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21
Stir in lime juice.
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22
Remove from heat.
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23
DO AHEAD: Can be made 2 hours ahead.
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24
Let stand at room temperature.
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25
Preheat oven to 300F.
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26
Place crepe stack (with paper towels between crepes) on rimmed baking sheet.
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27
Cover baking sheet with foil; warm crepes in oven until heated through, about 15 minutes.
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28
Place rum butter sauce mixture in small saucepan; heat over medium heat until melted and smooth, stirring occasionally.
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29
Rewarm tropical fruit mixture over medium heat, stirring occasionally, about 3 minutes.
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30
Stir in papaya and mango.
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31
Place 1 crepe on plate, browned side down.
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32
Spoon 2 teaspoons rum butter sauce over crepe, then fold crepe into quarters.
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33
Repeat with 2 more crepes on same plate.
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34
Spoon tropical fruit over.
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35
Repeat with remaining crepes, rum butter sauce, and tropical fruit, placing 3 crepes on each of 6 plates.
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36
Spoon any remaining rum butter sauce over crepes and serve.