- Preheat your oven to 350 degrees Fahrenheit.
- Combine all the dry ingredients in a large bowl: flour, sugar, cocoa powder, baking soda, salt, and vanillin.
- Mix the olive oil, vinegar, water, and vanilla in a separate bowl.
- Pour the wet ingredients into the bowl of dry ingredients and stir until smooth, ensuring there are no lumps.
- Prepare an 8×8 inch square baking pan by greasing it lightly.
- Transfer the batter into the prepared pan.
- Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.
- Allow the cake to cool completely before frosting.
See also I prepared this for a game night, and folks couldn’t believe it took just 3 ingredients
For the Frosting:
- Melt the butter in a small saucepan or microwave-safe dish.
- Stir in the cocoa powder until a thick paste forms.
- Transfer the chocolate mixture to a medium-sized mixing bowl.
- Add powdered sugar, milk (or heavy cream), and vanilla extract to the bowl.
- Mix on low speed until ingredients are combined.
- Increase the speed to medium-high and beat for approximately 5 minutes until the frosting is smooth and creamy.
- Spread the frosting evenly over the cooled cake.
