You can make a no-bake chocolate cake using cocoa powder, oil, and other ingredients like milk, sugar, flour, and baking powder. Mix the dry ingredients, add in the wet ones, and stir until combined. Then, pour the batter into a microwave-safe dish and cook in short intervals, checking for doneness. Let it cool before enjoying your homemade chocolate cake!
here's a basic recipe for a no-bake chocolate cake without an oven, beater, butter, or actual chocolate:

Ingredients:

1 and 1/2 cups all-purpose flour
1/2 cup cocoa powder
1 teaspoon baking soda
1 cup granulated sugar
1/2 cup vegetable oil
1 cup milk
1 teaspoon vanilla extract
A pinch of salt
Instructions:

In a large mixing bowl, sift together the all-purpose flour, cocoa powder, baking soda, and a pinch of salt.
Add the granulated sugar to the dry ingredients and mix well.
In a separate bowl, whisk together the vegetable oil, milk, and vanilla extract until well combined.
Gradually pour the wet ingredients into the dry ingredients while stirring. Mix until you have a smooth batter.
Grease a microwave-safe dish or cake pan with a little oil or line it with parchment paper.
Pour the batter into the prepared dish and smooth the top.
Place the dish in the preheated pan and cook on medium to high flame for 25 minutes. Check for doneness by inserting a toothpick into the center. If it comes out clean, the cake is done. If not, continue cooking in 1-minute intervals until done.
Once the cake is cooked, let it cool completely before removing it from the dish.
You can dust the top with powdered sugar, drizzle with chocolate syrup, or add your favorite frosting (if available).
Slice and serve your no-bake chocolate cake!
Keep in mind that microwave wattage can vary, so adjust the cooking time accordingly. This is a basic recipe, so feel free to experiment and add your own twists to it. Enjoy your homemade chocolate cake!