Ingredients

• 250g all-purpose flour
• 400g white sugar
• 1 tsp baking soda
• 120g milk
• 2 eggs
• 1 tsp vanilla extract
• 240g water
• 113g butter (optional add 1/2 tsp of salt if using unsalted butter)
• 108g vegetable oil
• 113g peanut butter

 

• Icing
• 55g butter (optional add 1/4 tsp of salt if using unsalted butter)
• 55g peanut butter
• 40g milk
• 1/2 tsp vanilla extract
• 285g confectioners' sugar

Originally posted on AllRecipes

Directions

1. Preheat oven to 350 degrees F (175 degrees C). Grease a baking sheet.
2. Whisk flour, white sugar, and baking soda together in a bowl. Beat milk, eggs, and vanilla extract into flour mixture using an electric mixer on low until smooth.
3. Cook and stir water, butter, vegetable oil, and peanut butter together in a saucepan over medium heat until smooth, about 5 minutes. Stir peanut butter mixture into flour mixture until batter is well mixed; pour onto the prepared baking sheet.
4. Bake in the preheated oven until a toothpick inserted in the centre of the cake comes out clean, about 20 minutes.
5. Melt butter and peanut butter together in a saucepan over medium heat until smooth; add milk and vanilla extract. Whisk confectioners' sugar into mixture until icing is smooth, 3 to 5 minutes. Pour icing over warm cake.