Ingredients
- cooking spray
- 2 cups white sugar
- 1 ¾ cups all-purpose flour
- ¾ cup unsweetened cocoa powder
- 1 ½ teaspoons baking soda
- 1 ½ teaspoons baking powder
- 1 teaspoon salt
- 1 cup milk
- ½ cup vegetable oil
- 2 large eggs
- 2 teaspoons vanilla extract
- 1 cup boiling water
Directions
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Spray the crock of a large slow cooker with cooking spray.
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Whisk sugar, flour, cocoa powder, baking soda, baking powder, and salt together in a large bowl.
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Whisk milk, oil, eggs, and vanilla together in a medium bowl until well combined. Slowly whisk in boiling water. Add wet ingredients to dry ingredients and mix until well combined; pour batter into the prepared slow cooker.
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Cover and cook on Low until cake has no wet spots on top and is pulling away from the sides of the crock, about 3 hours. Turn off slow cooker and let rest for 30 minutes before serving.

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