Grandma Sue's Stupendous Blackberry Jam Cake Recipe

Grandma Sue's Stupendous Blackberry Jam Cake Recipe


(2 votes) 4 2

This is my favorite recipe for Jam Cake that my Grandma has always baked for my father's birthday. It's a delicious dark cake and the brown sugar frosting that goes with it really seals the deal! Try it out on your own family, they won't be disappointed!

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Chicago, Illinois

Time needed

20 min preparation + 40 min cooking

Serving Size / Yield

12 servings


  • Cake:
  • 1 C. butter
  • 1 C. sugar
  • 3 eggs
  • 3 C. flour
  • 1 C. buttermilk
  • 1 tsp. baking soda
  • 1 tsp. cinnamon
  • 1 tsp. nutmeg
  • 1/2 tsp. cloves
  • 2 C. blackberry jam
  • Frosting:
  • 1/2 C. butter
  • 1 C. brown sugar
  • 1/4 C. 2% milk
  • 1/8 tsp. salt
  • 2 C. confectioners’ sugar

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In a large bowl, mix the butter and sugar. Once the butter and sugar are creamy, add the eggs one at a time. Keep mixing until the concoction is light and fluffy. In a separate bowl, mix flour, baking soda, cinnamon, nutmeg and cloves. To the bowl with the sifted dry ingredients, add the buttermilk. Pour the buttermilk and dry ingredients mixture into the first bowl, and beat with mixer for 2 minutes. Add the jam in slowly and beat until thoroughly mixed. Pour the final mixture into 2 9-inch round pans and bake at 350 degrees for 35-40 minutes.

For frosting, mix butter and brown sugar together in pan over stove; slowly increase heat until boiling. Boil about 2 minutes. Take the mixture off the heat and stir in the 1/4 C. milk. Put pan back on heat, boil. After a minute of boiling, take the pan off the heat. Once cool, slowly stir in 1/8 tsp. salt and 2 C. confectioners’ sugar. This frosting is thick, so as it cools if it gets too difficult to spread evenly over the cake, put the pan back on the stove for a few minutes until the frosting is more of a liquid before you keep frosting. 

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