Prepare the Cake Pan: Preheat the oven to 350°F (175°C). Grease the bundt cake pan thoroughly to prevent sticking.
Mix Dry Ingredients: In a large bowl, combine flour, cocoa powder, baking powder, baking soda, salt, and sugars. Mix well.
Prepare Wet Ingredients: In another bowl, whisk eggs, melted butter, oil, milk, and vanilla extract until smooth.
Combine the Batter: Slowly add the wet mixture into the dry ingredients. Stir gently until combined. Avoid overmixing to keep the cake soft and moist.
Add Chocolate Chips: Fold chocolate chips into the batter for extra chocolate richness.
Bake the Cake: Pour the batter into the prepared pan and bake for 40–50 minutes or until a toothpick inserted in the center comes out clean.
Cool the Cake: Allow the cake to cool for 10–15 minutes before removing it from the pan. Place it on a cooling rack to cool completely.
Add Frosting: Mix frosting ingredients until smooth and creamy. Drizzle or spread the chocolate frosting over the cooled cake.
Serve and Enjoy: Slice and serve your Galactic Brownie Cake Nothing Bundt with ice cream, whipped cream, or fresh berries.