Homemade Fudgy M&M Brownies with Chocolate Chips

There are brownies… and then there are these brownies.

If you love a brownie that is thick, ultra-fudgy, and packed with rich chocolate flavor, this recipe is going to be a new favorite. These brownies have that beautiful crackly top, a dense fudgy center, and chocolate in every bite thanks to both chocolate chips and colorful M&M’s.

The M&M’s make them extra fun and festive, but they also add little pockets of melty chocolate throughout the brownies. Every square is chewy, rich, and completely irresistible.

When I made these for my family, the reaction was immediate. My kids said these were hands down better than any fudge brownies they’ve ever had. That’s saying something in a house full of chocolate lovers!

These brownies are rich enough that you’ll definitely want a cold glass of milk nearby. They’re the kind of dessert you bring to a party, potluck, or family gathering and people immediately ask for the recipe.

And the best part? They’re actually very simple to make.

Why You’ll Love These Brownies

There are a lot of brownie recipes out there, but this one has a few key things that make it extra special.

Ultra Fudgy Texture

These brownies are not cakey at all. They bake up thick, dense, and perfectly fudgy thanks to the combination of melted chocolate, cocoa powder, and just a small amount of flour.

Two Types of Sugar

Using both granulated sugar and powdered sugar creates that signature shiny, crackly brownie top while keeping the interior soft and rich.

Chocolate in Every Bite

Between the melted chocolate, cocoa powder, chocolate chips, and M&M’s, these brownies are packed with deep chocolate flavor.

Perfect for Holidays and Parties

The M&M’s make these brownies fun to customize. You can easily swap them for seasonal colors for Christmas, Easter, Halloween, or the Fourth of July.

Ingredients You’ll Need

10 tablespoons salted butter, cubed

Butter adds richness and moisture to the brownies. Using salted butter helps balance the sweetness of the chocolate and sugar.

4 ounces semi-sweet chocolate, chopped

This melts into the batter and gives the brownies their deep chocolate flavor.

¼ cup vegetable oil

Oil helps keep the brownies extra moist and fudgy.

¾ cup cocoa powder

This intensifies the chocolate flavor and contributes to the dense texture.

3 large eggs + 1 egg yolk

The extra yolk adds richness and helps create that chewy brownie texture.

¾ cup granulated sugar

Granulated sugar helps create the classic shiny brownie top.

1½ cups powdered sugar

This adds sweetness and helps produce a soft, fudgy texture.

2 teaspoons vanilla extract

Vanilla enhances all the chocolate flavors in the recipe.

¼ teaspoon salt

A little salt balances the sweetness and deepens the chocolate flavor.

½ cup all-purpose flour

Just enough flour to hold everything together while keeping the brownies dense and fudgy.

Pinch of espresso powder (optional)

Espresso powder doesn’t make the brownies taste like coffee — it simply enhances the chocolate flavor.

¾ cup semi-sweet chocolate chips

More chocolate never hurts in a brownie recipe.

1 cup M&M’s

Adds color, texture, and extra chocolate flavor.

How to Make Fudgy M&M Brownies

Step 1: Prepare the Pan

Preheat your oven to 350°F.

Spray an 8×8 metal baking pan with nonstick spray and line it with parchment paper. This makes it much easier to lift the brownies out of the pan once they’ve cooled.

Step 2: Melt the Chocolate and Butter

In a microwave-safe bowl or small saucepan, melt together:

• butter

• chopped semi-sweet chocolate

Heat in 30-second intervals, stirring each time until completely smooth.

Once melted, whisk in:

• vegetable oil

• cocoa powder

Stir until smooth and glossy, then allow the mixture to cool slightly.

Step 3: Make the Batter

In a large mixing bowl whisk together:

• eggs

• egg yolk

• granulated sugar

Whisk for 1–2 minutes until smooth and slightly thickened.

Next, whisk in:

• powdered sugar

• vanilla extract

• salt

This step helps dissolve the sugars and contributes to that beautiful crackly brownie top.

Step 4: Combine the Batter

Pour the cooled chocolate mixture into the egg mixture and whisk until fully combined.

Using a spatula, gently fold in:

• flour

• espresso powder (if using)

• chocolate chips

• M&M’s

The batter will be thick and rich.

Step 5: Bake

Spread the brownie batter evenly into the prepared pan.

Sprinkle extra M&M’s on top for a colorful finish.

Bake for 29–32 minutes.

The brownies are ready when:

• the edges are set

• the center still has a slight wobble

• a toothpick inserted comes out with moist crumbs (not wet batter)

Step 6: Let Them Cool

This is the hardest part, but it’s important!

Let the brownies cool in the pan for at least 1 hour before slicing. This allows them to set properly and gives them that dense, fudgy texture.

I actually made mine the day before cutting them, and they were absolutely perfect.

Tips for Perfect Brownies

Use a metal baking pan

Metal pans conduct heat better and give brownies a better texture than glass pans.

Don’t overbake

If you want that ultra-fudgy center, pull them out when the middle still looks slightly underdone.

Let them cool completely

Cutting brownies too early can make them fall apart. Cooling allows them to firm up and slice cleanly.

Fun Variations

You can easily customize this recipe depending on the occasion.

Holiday Brownies

Use seasonal M&M colors for Christmas, Valentine’s Day, Easter, or Halloween.

Peanut Butter Brownies

Add ½ cup peanut butter chips for a peanut butter-chocolate twist.

Caramel Brownies

Swirl caramel sauce through the batter before baking.

Extra Chocolate Brownies

Use a mix of milk chocolate and semi-sweet chips for even more chocolate flavor.

How to Store Brownies

Store brownies in an airtight container at room temperature for up to 4 days.

They also freeze beautifully. Simply wrap individual brownies in plastic wrap and store them in a freezer bag for up to 3 months.

If you’re a brownie lover like I am, this is definitely a recipe worth saving. They’re rich, chocolatey, perfectly fudgy, and always a crowd favorite.

And don’t forget the most important part…

A cold glass of milk on the side.