Discover the ultimate easy dessert with these 3-Ingredient Fudgy Brownies that are unbelievably rich, fudgy, and decadent. They’re a quick, one-bowl wonder that uses a simple boxed mix shortcut for a texture so perfect, you’ll never make brownies any other way.
Table of Contents
Why You Will Love This Recipe
As a self-proclaimed brownie connoisseur, I’m always on the hunt for the perfect recipe. My journey began in college with boxed mixes, but it hit a new peak when I discovered a viral TikTok recipe from Matthew Bounds. By simply swapping the usual water and oil for sweetened condensed milk, I unlocked a brownie with a texture so decadent like a cross between fresh fudge and a brownie that it instantly became my new gold standard.
Ingredients
- Nonstick cooking spray
- 1 (16 to 18-ounce) box store-bought brownie mix
- 1 (14-ounce) can sweetened condensed milk
- 2 large eggs

Step-by-step instructions for making the recipe
- Preheat your oven to 350°F. Line an 8×8-inch baking dish with parchment paper and spray the parchment with nonstick cooking spray.
- In a large mixing bowl, combine the boxed brownie mix, sweetened condensed milk, and eggs.
- Use a wooden spoon or sturdy spatula to mix the ingredients by hand until just combined and no dry spots of brownie mix remain. Be careful not to overmix. The batter will be thick.
- Pour the thick batter into the prepared baking dish and spread it into an even layer.
- Bake for about 30 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs attached. If wet batter remains, bake for 5 more minutes and check again.
- Remove the brownies from the oven and let them cool completely in the pan on a wire rack.
- Once cool, use the parchment paper to lift the brownies out of the pan. For the cleanest slices, refrigerate the brownies for 15 minutes to firm up.
- Place the chilled brownies on a cutting board and slice into squares. Serve and enjoy.

3-Ingredient Fudgy Brownies
Ingredients
Equipment
Method
- Preheat your oven to 350°F. Line an 8×8-inch baking dish with parchment paper and spray the parchment with nonstick cooking spray.Nonstick cooking spray
- In a large mixing bowl, combine the boxed brownie mix, sweetened condensed milk, and eggs.1 box store-bought brownie mix, 1 can sweetened condensed milk, 2 large eggs
- Use a wooden spoon or sturdy spatula to mix the ingredients by hand until just combined and no dry spots of brownie mix remain. Be careful not to overmix. The batter will be thick.
- Pour the thick batter into the prepared baking dish and spread it into an even layer.
- Bake for about 30 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs attached. If wet batter remains, bake for 5 more minutes and check again.
- Remove the brownies from the oven and let them cool completely in the pan on a wire rack.
- Once cool, use the parchment paper to lift the brownies out of the pan. For the cleanest slices, refrigerate the brownies for 15 minutes to firm up.
- Place the chilled brownies on a cutting board and slice into squares. Serve and enjoy.
Notes
FAQ
Can I add mix-ins to these brownies?
Absolutely! For a delicious twist, try swirling in 2 tablespoons of melted peanut butter into the batter before baking, or fold in a handful of chopped nuts, chocolate chips, or even mini marshmallows.
Why do I need to chill the brownies before slicing?
Chilling the brownies for just 15 minutes firms up the very fudgy texture, allowing you to get perfectly clean, sharp slices without them falling apart. Don’t chill them for much longer, or they can become too firm.
How should I store leftovers?
Store the brownies in an airtight container at room temperature for up to 3 days for optimal freshness. For longer storage, you can freeze them individually wrapped for up to 3 months.