Old Farmer's Almanac Peanut Butter Sheet Cake

READY IN: 50mins
Recipe by Pinay0618

Second Prize: Peanut Butter Recipe Contest Winner

Top Review by StickyToffee

Delicious, "casual" cake, especially good eaten warm on a cold day with a big mug of coffee or tea. I made half the recipe and baked it for 25 min. in an 8" square pan. I substituted butter for the margarine.

Ingredients Nutrition


  1. Cake:.
  2. Preheat the oven to 350 degrees F.
  3. In a large bowl, mix the flour, baking soda, sugar, and salt; set aside.
  4. In a saucepan, bring the oil, margarine, peanut butter, and 1 cup of water almost to a boil (do not boil). Pour over the dry ingredients and mix well.
  5. Add the eggs, vanilla, and buttermilk. Mix well.
  6. Pour the batter into a greased and floured 15x11x1-inch pan. Bake for 15 to 18 minutes, or until a toothpick inserted into the center comes out clean.
  7. Icing:.
  8. Combine the evaporated milk, sugar, and margarine in a saucepan. Bring to a boil and cook for 2 minutes.
  9. Remove from the heat and add the peanut butter and marshmallows, stirring until melted. Stir in the vanilla.
  10. Pour the icing over the warm cake and spread to cover.

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