Millionaire Brownie Cake

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close up of Millionaire Brownie Cake with ice cream on a white dish

Have you ever wondered what would happen if a brownie and a cookie came together in perfect harmony?  Me too…

I decided to try it and let me tell you, the heavens opened up, birds started singing, rainbows fell from the sky!  This is the kind of dessert that you dream about… the kind that makes your knees buckle a little bit.  This is the most deliciously rich brownie cake recipe…  so rich it couldn’t be called anything but Millionaire Brownie Cake!

To make this brownie recipe extra quick and easy, I’ve started with packaged cooked and brownie mixes and added a few simple staple ingredients!  You can use any flavor of cookie mix or brownie  mix to make this dessert, just make sure your brownie mix makes a 9×9 pan (or 8×8 pan) and isn’t the family size.   I baked mine about 32 minutes… a toothpick inserted in the cookie portion should come out clean, you want it just set and not over baked to keep it ooey gooey.

collage of Millionaire Brownie Cake topped with ice cream

Serve it up with a scoop of ice cream and some fudge sauce for an extra special dessert that your family will go crazy for!


Items you’ll need for this brownie cake recipe:

* Brownie Mix * Cookie Mix * 9×13 Pan *


Millionaire Brownie Cake with ice cream and echolocate sauce closeup
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Review Recipe

Millionaire Brownie Cake

Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings 12 servings
Author Holly Nilsson
Course Dessert
Cuisine American
Serve it up with a scoop of ice cream and some fudge sauce for an extra special dessert that your family will go crazy for!


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  • chocolate chip cookie mix packet (17.5 oz)
  • brownie mix , approx. 19.9 oz (Not family size, makes approx. 9x9 pan)
  • 3 tablespoons water , divided
  • 4 eggs , divided
  • 2/3 cup butter , divided

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  • Preheat oven to 350 degrees. Generously grease a 9x13 pan.
  • Combine brownie mix, 1/3 cup butter, 2 tablespoons water and 2 eggs in a bowl.
  • In a separate bowl, combine cookie mix, 2 eggs, 1 tablespoon water and 1/3 cup butter.
  • Place cookie mix in 2 tablespoon heaps around the pan. Place brownie mix in the pan in between cookie mix.
  • Bake 30-35 minutes or just until set. Do not over bake. Serve warm with ice cream and chocolate sauce.

Nutrition Information

Calories: 111, Protein: 1g, Fat: 11g, Saturated Fat: 6g, Cholesterol: 81mg, Sodium: 111mg, Potassium: 23mg, Vitamin A: 395IU, Calcium: 11mg, Iron: 0.3mg
Keyword Millionaire Brownie Cake

Millionaire Brownie Cake collage, with ice cream and in the pan

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About the author


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Holly is a wine and cheese lover, recipe creator, shopping enthusiast and self appointed foodie. Her greatest passion is creating in the kitchen and making deliciously comforting recipes for the everyday home cook!

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