INGREDIENTS
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3 large croissants, a few days stale
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3 eggs
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¾ cup milk
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3 tablespoons Greek yogurt
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¼ cup sugar
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½ tablespoon vanilla extract
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3 tablespoons flour
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¼ cup brown sugar
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cinnamon to taste (I used almost a full teaspoon)
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pinch of salt
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3 tablespoons cold butter, cut into small pieces