Yields Makes 10 to 12 servings
Notes: Up to 1 day ahead, separately wrap orange slices and dessert airtight, without touching the dessert top; chill. Uncover and decorate with fruit.

How to Make It

Step 1
1

Separate ladyfingers (or thinly slice cake) and lay pieces side by side (or overlap, as needed) to cover a 14- to 15-inch-wide rimmed platter or very shallow bowl; leave a 1-inch rim.

Step 2
2

Mix chestnut spread with rum and 2 tablespoons of the orange syrup. Pour remaining syrup over ladyfingers to moisten evenly. Gently spread chestnut mixture over ladyfingers, leaving 1 inch at rim of the cookies uncovered.

Step 3
3

In a bowl with a mixer on high speed, beat whipping cream until it holds distinct peaks; whisk in the yogurt. Swirl over chestnut spread and most of the exposed ladyfinger rim.

Step 4
4

Pare chocolate with a vegetable peeler to make curls, or finely chop with a knife or in a food processor. Scatter chocolate over tiramisu. Top chocolate with orange slices. Scoop portions with a spoon.

Step 5
5

Orange syrup: In a 1- to 1 1/2-quart pan over high heat, boil 1 cup water, 1/2 cup sugar, and 1 tablespoon finely shredded orange peel until reduced to 3/4 cup. Let cool slightly and add 1/4 cup rum or orange juice. Use hot or cool.

Ingredients

 12 ounces ladyfingers or pound cake
 1 can (17 1/2 oz., 1 1/2 cups) sweetened chestnut spread
 2 tablespoons rum or orange juice
  Orange syrup (recipe below)
 1 cup whipping cream
 2 cups plain nonfat yogurt or regular sour cream
 2 to 4 ounces semisweet chocolate
 3 or 4 thin round peeled orange slices

Directions

Step 1
1

Separate ladyfingers (or thinly slice cake) and lay pieces side by side (or overlap, as needed) to cover a 14- to 15-inch-wide rimmed platter or very shallow bowl; leave a 1-inch rim.

Step 2
2

Mix chestnut spread with rum and 2 tablespoons of the orange syrup. Pour remaining syrup over ladyfingers to moisten evenly. Gently spread chestnut mixture over ladyfingers, leaving 1 inch at rim of the cookies uncovered.

Step 3
3

In a bowl with a mixer on high speed, beat whipping cream until it holds distinct peaks; whisk in the yogurt. Swirl over chestnut spread and most of the exposed ladyfinger rim.

Step 4
4

Pare chocolate with a vegetable peeler to make curls, or finely chop with a knife or in a food processor. Scatter chocolate over tiramisu. Top chocolate with orange slices. Scoop portions with a spoon.

Step 5
5

Orange syrup: In a 1- to 1 1/2-quart pan over high heat, boil 1 cup water, 1/2 cup sugar, and 1 tablespoon finely shredded orange peel until reduced to 3/4 cup. Let cool slightly and add 1/4 cup rum or orange juice. Use hot or cool.

Chestnut Tiramisu