Brownie Mix Double Fudge Bars

Name: Brownie Mix Double Fudge Bars
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 16 bars
Ingredients: 1 box of brownie mix (choose your favorite brand); 1/4 cup vegetable oil; 2 large eggs; 1 cup chocolate chips; 1/2 teaspoon vanilla extract; Pinch of sea salt (optional)

Highlighted under: Whisked & Baked

I absolutely love making these Brownie Mix Double Fudge Bars for any occasion. The rich, fudgy texture coupled with the ease of using a brownie mix means I can whip them up in no time. Plus, the added chocolate chips take the flavor over the top! These bars are perfect for satisfying any chocolate craving and are a big hit at gatherings. Whether it’s a birthday party or a quiet family night, these treats never fail to impress.

Created by

Camilla Rhodes

Last updated on 2026-02-24T06:17:36.934Z

When I first tried these Brownie Mix Double Fudge Bars, I was amazed at how simple the process was without sacrificing flavor. Using a store-bought brownie mix, you can create something that feels homemade with minimal effort.

After experimenting with a few variations, I found that adding extra chocolate chips and a pinch of sea salt on top elevates the overall taste. This small detail gives these bars an indulgent quality that my friends can't get enough of!

Why You'll Love These Bars
Rich chocolate flavor with an extra layer of fudge
Quick and easy to whip up, perfect for any occasion
Ideal for sharing with friends or indulging yourself

Perfecting the Fudgy Texture

Achieving that perfect fudgy texture is about balancing the ingredients. The brownie mix provides the base, but the addition of eggs and oil is crucial. The eggs add richness and moisture, while the oil helps keep the bars soft. Be cautious not to overmix once the eggs are incorporated—mix just until combined to prevent tough brownies. If you prefer a more cake-like texture, try adding an extra egg; however, this will lead to a less fudgy result.

For those who love extra fudginess, consider adding an additional 1/4 cup of cocoa powder to the mix. This not only intensifies the chocolate flavor but also enhances that gooey texture. Just remember, the more cocoa powder you add, the less mix you have left, so you might want to adjust the baking time slightly to avoid overbaking.

Storing and Serving Suggestions

Once your Brownie Mix Double Fudge Bars have cooled, store them in an airtight container at room temperature for up to 3 days. For longer storage, they freeze beautifully! Wrap each square in plastic wrap and then place them in a resealable freezer bag. They will keep for up to 3 months; when you’re ready to enjoy them, simply thaw at room temperature for a few hours or microwave for 10-15 seconds to bring back their delightful fudginess.

These bars are versatile and can be enjoyed in various ways. For an indulgent treat, serve them warm with a scoop of vanilla ice cream on top, allowing the heat to melt the ice cream slightly, creating a decadent dessert. You can also drizzle them with melted chocolate or caramel sauce for added sweetness and a beautiful presentation.

Ingredients

Gather these simple ingredients to create your delicious brownie bars:

Ingredients

1 box of brownie mix (choose your favorite brand)
1/4 cup vegetable oil
2 large eggs
1 cup chocolate chips
1/2 teaspoon vanilla extract
Pinch of sea salt (optional)

You'll love how easy these come together!

Instructions

Follow these straightforward steps to bake your decadent brownie bars:

Prepare the Batter

In a mixing bowl, combine the brownie mix, vegetable oil, and eggs. Stir until all ingredients are well blended. If you want extra fudginess, mix in a bit of vanilla extract.

Add Chocolate Chips

Fold in the chocolate chips until evenly distributed in the batter, ensuring every bite is full of delightful chocolate.

Bake

Pour the batter into a greased 9x9-inch baking pan. Bake at 350°F (175°C) for 25 minutes, or until a toothpick comes out with a few moist crumbs.

Cool and Serve

Let the bars cool in the pan for about 10 minutes before transferring them to a wire rack. Cut into squares and enjoy!

Let the bars cool completely for better slicing.

Pro Tips

For a fun twist, try adding nuts or swirling in peanut butter before baking!

Ingredient Substitutions

If you’re looking to make these bars a bit healthier, consider substituting the vegetable oil with unsweetened applesauce. This will reduce the fat content while keeping the bars moist. Just replace the oil with the same amount of applesauce and monitor the baking time, as they may bake slightly faster.

For those who need a gluten-free version, simply use a gluten-free brownie mix. Many brands offer blends that work just as well as traditional mixes. Be sure to check the packaging for baking instructions, as they may include specific tips for achieving the best texture.

Troubleshooting Common Issues

If your brownies turn out too dry, it may be due to overbaking. To remedy this, be sure to check for doneness a few minutes before the suggested baking time ends. Insert a toothpick; if it comes out with a few moist crumbs, they're done. For next time, you can also experiment with reducing the baking time by a minute or two.

On the other hand, if the brownies are too gooey in the center, it’s likely they need a bit more time in the oven. Depending on your oven calibration, you might need to add an extra 3-5 minutes. Keep a close eye on them to avoid burning the edges, as you want that perfect balance of a slightly set exterior and a beautifully gooey interior.

Questions About Recipes

→ Can I use a different type of brownie mix?

Absolutely! Feel free to experiment with different flavors, like caramel or mint chocolate.

→ How should I store these bars?

Keep them in an airtight container at room temperature for up to 3 days or in the fridge for up to a week.

→ Can I freeze the bars?

Yes, you can freeze them! Wrap each bar individually in plastic wrap or aluminum foil and store in a freezer-safe bag.

→ What can I substitute for eggs?

You can use unsweetened applesauce or a flaxseed egg (1 tablespoon of flaxseed meal mixed with 2.5 tablespoons of water) as a substitute.