Making the Ultimate Chocolate Peanut Butter Ooey Gooey Cake is simple if you follow these straightforward steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease and flour an 8-inch square baking pan.
2. Mix Dry Ingredients: In a medium bowl, sift together the flour, sugar, cocoa powder, baking powder, and salt.
3. Combine Wet Ingredients: In another bowl, whisk together the melted butter, eggs, and vanilla extract until smoothly blended.
4. Combine Mixtures: Gradually add your wet mixture to the dry ingredients, stirring until just combined.
5. Add Peanut Butter: Gently fold in the creamy peanut butter until evenly distributed within the batter.
6. Add Chocolate Chips: Fold in the semi-sweet chocolate chips, ensuring an even spread throughout the batter.
7. Pour into Pan: Pour the batter into the prepared baking pan, smoothing the top with a spatula.
8. Bake: Place in the preheated oven and bake for 30-35 minutes, or until the center is set but still slightly gooey.
9. Cool: Remove the cake from the oven and allow it to cool in the pan for 10-15 minutes.
10. Prepare Ganache: While the cake cools, heat the heavy cream until just simmering and pour it over remaining chocolate chips in a bowl. Stir until melted and smooth.
11. Top with Ganache: Once the cake has cooled slightly, drizzle or pour the chocolate ganache over the top.

These simple steps will guide you in crafting this incredible cake that is sure to please everyone who takes a bite!