These brownies are moist, gooey and chewy with the addition of a secret ingredient!  There are two methods for this recipe…  one uses a box mix as a starter (I like easy) and one is from scratch!

chewy brownie with chocolate frosting drizzled on top

The Secret Ingredient

These will stay nice and fudgy with the addition of a surprise ingredient…  sweetened condensed milk!  Once you add it to your brownie mix the first time, you’ll always want to bake them that way!

I topped mine with Oreo cookies…  feel free to add your own yummy twists like:

  • 1/2 cup of nuts (pecans or walnuts)
  • 1/2 cup chocolate chips
  • 1/3 cup coconut

Be sure to keep an eye on them when baking.  You want them cooked but not overcooked!

chewy Oreo brownie with chocolate frosting drizzled on top
4.50 from 4 votes↑ Click stars to rate now!
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Gooey Chewy Brownies (with a secret ingredient)!

There are two methods for this recipe…  one uses a box mix as a starter (I like easy) and one is from scratch!
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 12 servings



  • 1 box brownie mix not family sized (plus ingredients required on the box)


  • cup butter
  • 3 ounces unsweetened chocolate , chopped
  • 1 cup sugar
  • 2 eggs
  • cup flour
  • 1 teaspoon vanilla
  • teaspoon baking soda


  • 1 can sweetened condensed milk
  • 10 Oreo cookies (optional)
  • Frosting (optional)


  • Preheat oven to 350°F.

If using a box mix:

  • Prepare brownie mix according to directions (or prepare your own favorite brownie mix).

If using the recipe above:

  • Combine flour & baking soda, set aside.
  • Melt butter & chocolate on medium power in the microwave until just about melted. Stir in sugar. Add eggs and stir until mixed. Add flour mixture and stir just until combined.


  • Pour about ⅓ of the sweetened condensed milk into the brownie mix and stir until combined.
  • Line the bottom of a 9x9 pan with parchment paper. Pour the brownie mixture into the pan.
  • Break the Oreo cookies (if using) and scatter over the top of the brownie mix. Pour the remaining sweetened condensed milk over the brownies and bake 25-30 minutes.
  • Drizzle with chocolate frosting if desired.


Nutrition info includes the homemade version.
4.50 from 4 votes

Nutrition Information

Serving: 1g | Calories: 229 | Carbohydrates: 31g | Protein: 3g | Fat: 11g | Saturated Fat: 6g | Cholesterol: 40mg | Sodium: 134mg | Potassium: 97mg | Fiber: 1g | Sugar: 20g | Vitamin A: 195IU | Calcium: 16mg | Iron: 2.6mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Dessert
Cuisine American





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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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Recipe Rating


  1. Well it turned out great… Finally! I used a box mix, I don’t know why I did because I never use a box anything but it was the last minute whimsy in the store there had to be a recipe out there for brownies and sweetened condensed milk. so because I used box brownies this has no reflection on the recipe however the one thing that not be an issue is the box gave a choice of chewy brownies or cake light brownies. I chose the chewy which was one egg instead of two. That’s the only thing I can think that cause the issue . But I cooked for 30 minutes took out of the oven and when I got back to them to slice they were liquid in the middle I had to put them back in for another 20 minutes. So like I said the taste in the ease had nothing to do with this recipe particularly but I’m wondering if it should have said, if there was a choice of course, to choose the cake like brownies. I have no idea if that would make a difference in the cooking time or not period And I apologize for the very long ramble. So the brownies taste great but they took an additional 20 minutes to cook.4 stars

  2. I made these this evening, they turned out really good! the only problem I had was when I poured the condensed milk over the top of the batter as written I got too close to the edges and so the edges of the brownies were hard and chewy, The middle was fantastic! Next time I think I will just add condensed milk to the batter when mixing and not pour the rest over the top. Thank for sharing this recipe4 stars

  3. Everything’s better with sweetened condensed milk! And thanks for making me crave brownies at 10:30pm. ;) ! Thanks for sharing at Inspire Us Thursday on Organized 31.

  4. OH YUM!!! I can never turn down a brownie! I love a soft brownie, so this recipe is perfect! I’ll be sharing this recipe on FB, Twitter and Pinterest. Thanks for linking up to Wake up Wednesdays!

  5. Why not make from a family-size brownie mix and use a 13×9 pan? I’m an odd person that likes to bake but has not brownie pans, lol.

    1. I like the small ones because guess who eats it all… ;) It would work with a 9×13 and family size as well! I would still use just one can of sweetened condensed milk (based on the gooey-ness of the ones I have tried!).

      If you try it, please let us know how it works out for you! :0

  6. Is there any reason for the parchment paper other than easy removal from the pan? It’s not something I have on hand, but have all other ingredients to make this now!