Chocolate Chip Rhubarb Cake

Cake:
1 1/2 cups brown sugar
1/2 cup shortening
1 egg
1 teaspoon vanilla
2 cups flour
1 teaspoon baking soda
1/2 teaspoon salt
1 cup buttermilk or sour cream
1 3/4 cup chopped rhubarb
1/2 cup chocolate chips

Topping:
1 teaspoon cinnamon
1/2 cup chopped nuts
1/2 cup chocolate chips
1/2 cup brown sugar

Cake:
Cream together brown sugar and shortening. Add egg and vanilla.

Combine flour, baking soda and salt together. Add flour mixture to creamed mixture, alternately with buttermilk, beating after each addition. Stir in rhubarb and chocolate chips.

Pour into a greased 9 x 13 inch baking dish.

Topping:
Combine topping ingredients.

Sprinkle over the cake batter. Bake at 350 degrees F. for 45 minutes.