Fruit soufflés are dramatic and impressive yet so easy to make. This one will impress everyone at your table. Make the fruit puree well in advance, and beat the egg whites before you sit down to dinner. Then, when you’re too full to eat anything more, fold the two together and put the soufflés in the oven. Just when you’re beginning to think you could eat a little dessert, they’ll be ready.
Preheat the oven to 425 degrees with the rack adjusted to the lowest position. Butter one 2-quart soufflé dish or six 6-ounce ramekins and dust with sugar (use about 1 1/2 tablespoons of the sugar).
03In the bowl of a standing mixer fitted with the whisk attachment, or in a large bowl with a hand mixer, beat the egg whites on low speed for one minute or until they foam. Add the cream of tartar, and continue to beat on low speed for one minute. Turn the speed to medium, and slowly stream in the remaining sugar while you continue to beat until there are firm, satiny peaks. Be careful not to overbeat.
04Fold one third of the egg whites into the apple-pear puree to lighten it. Fold in the rest. Gently spoon into the ramekins or the soufflé dish, mounding it up over the top. Put the ramekins on a baking sheet, and place in the oven. Bake individual soufflés for about 10 minutes, until puffed and golden. They should still be runny on the inside. Bake a large soufflé for 15 to 20 minutes. Serve at once.