Step 1

Combine sugar, flour, butter, salt, orange peel, and allspice in a medium-size bowl. Blend with pastry blender or a fork until mixture is crumbly and completely incorporated.

Step 2

Spoon half the mixture into a buttered 9-inch square cake pan (or use a springform pan to serve at the table).

Step 3

Stir baking soda into sour cream and mix into the remaining crumb mixture. Add eggs and combine thoroughly.

Step 4

Pour batter into the pan and sprinkle top with chopped nuts.

Step 5

Bake in 350 degree oven for 40-45 minutes.

Step 6

Serve warm topped with orange whipped cream (recipe below).

Step 7

Whip cream until stiff using electric mixer.

Step 8

Stir in sugar, orange peel, and liqueur.

Step 9

Let stand in refrigerator for about one hour to combine flavors.