Preheat your oven to 350F (177C). Prep a 330 ml (1 1/3 cup) bundt mould with melted shortening and coat it with granulated sugar. You can also use softened butter and cocoa powder. Set aside.

For the Chocolate batter: - Cream together the sugar and oil in a bowl. - Mix in the egg, vanilla and milk. - In a separate bowl combine the flour, cocoa powder. baking powder, baking soda and salt. - Slowly add your dry ingredients to your wet ingredients while stirring until combined. - Mix in the boiling water.

For the Peanut Butter batter: - Cream together the butter, peanut butter and sugar in a bowl. - Mix in the egg and vanilla. - In a separate bowl combine the flour, baking powder and salt. - Mix in 1/3 of your flour mixture until mixed. Followed by 1/3 of your milk. Alternate until everything is added.

Layering the cake: - Pour some of the chocolate batter into the prepared bundt pan. - Scoop peanut butter batter over the chocolate batter. - Continue alternating until both batters are completely used. - Bake for about 30 minutes or until a toothpick comes out clean. - Allow to cool before removing from pan.

For the Peanut Butter sauce: - Place the peanut butter, sweetened condensed milk, water, and vanilla in a small bowl. - Microwave for 1 to 2 minutes, stirring every 15 to 20 seconds, until the mixture is well combined and runny. Drizzle over the cake. Note: if you leave this sauce out in the bowl for a while, it will thicken up. It’s best to make the peanut butter sauce just prior to placing it on the cake.