Cadbury Egg Cookie Bars

Last spring, I was rushing to put together a dessert for an Easter potluck when I spotted a bag of Cadbury mini eggs on sale at the grocery store. Standing in that aisle, I realized I had everything at home to make something special—soft, chewy cookie bars studded with those little chocolate treasures and colorful pastel M&Ms. By the time I pulled them from the oven, the whole kitchen smelled like buttery chocolate, and I knew I'd stumbled onto something my friends would keep asking about.

My neighbor stopped by one afternoon while these were still warm, and the smell alone pulled her into the kitchen. She took one bite and immediately asked if I could make them for her daughter's school celebration—that moment told me everything I needed to know about whether this recipe was a keeper.

Ingredients

• All-purpose flour: The backbone of these bars, giving them structure without being dense or heavy.
• Baking soda: Just enough to help the bars rise slightly and stay tender, not cakey.
• Salt: A pinch that rounds out all the sweetness and makes the chocolate flavor pop.
• Unsalted butter, melted and cooled: Melting it first means easier mixing and a richer, more tender crumb.
• Light brown sugar and granulated sugar: The combination of molasses notes and pure sweetness creates the perfect chewy texture.
• Eggs at room temperature: They blend more smoothly into the wet ingredients and help bind everything together.
• Vanilla extract: Use pure vanilla, not imitation, because you'll taste the difference against the chocolate.
• Cadbury mini eggs, chopped: Don't skip chopping them—this distributes the chocolate throughout rather than having whole pieces that shift during baking.
• Pastel M&Ms: The color matters for spring and Easter, but they also add a fun crunch and another layer of chocolate flavor.

Instructions

Heat your oven and prep the pan:

Get the oven to 350°F and line your 9x13-inch pan with parchment paper, leaving some hanging over the edges so you can lift the whole batch out easily once cooled. This step saves you from frustrated crumbling later.

Combine your dry ingredients:

Whisk the flour, baking soda, and salt together in a medium bowl, making sure there are no lumps hiding in the flour. This distributes the leavening evenly so your bars rise consistently.

Mix the wet base:

In a larger bowl, whisk the cooled melted butter with both sugars until it looks smooth and slightly glossy. You want it combined but not airy—this isn't like creaming butter and sugar the traditional way.

Add eggs and vanilla:

Whisk the eggs and vanilla into the butter mixture one at a time, making sure each is fully incorporated before moving on. The mixture should look smooth and pale.

Fold in the dry ingredients:

Using a spatula, gently fold the dry mixture into the wet ingredients until just combined—don't overmix or you'll develop gluten and end up with tough bars instead of chewy ones. Stop folding when you no longer see streaks of flour.

Fold in most of the mix-ins:

Gently fold in the chopped Cadbury eggs and about half of the M&Ms, being careful not to crush them. Save the rest for decorating the top.

Spread and decorate:

Pour the dough into the prepared pan and spread it evenly with your spatula. Sprinkle the remaining M&Ms and a few extra chopped egg pieces over the top so they bake slightly into the surface and look intentional.

Bake until just set:

Bake for 23 to 26 minutes—the edges should be golden and the center should feel mostly set but still have a tiny bit of give when you press it gently. This is the window for bars that are soft and chewy, not dry.

Cool completely before cutting:

Let the bars cool all the way in the pan; they'll continue to set as they cool and will be much easier to cut cleanly. Once cooled, lift the whole slab out using the parchment overhang and cut into 16 bars with a sharp knife.

Pin It

There's something magical about watching people's faces light up when they bite into a bar and hit a chunk of Cadbury egg. It's not just dessert—it's a small moment of joy that tastes like spring.

Why These Bars Beat Regular Cookies

Cookie bars are honestly my favorite format because they bake all at once without any portioning fuss, and they stay fresher longer than individual cookies. Plus, there's something satisfying about cutting them into neat squares that feel more intentional than dropping dough by the spoonful.

When to Make These

Obviously Easter and spring celebrations are natural moments for these, but I've also made them in the middle of winter just to brighten things up. They're also perfect for lunchbox treats, bake sales, or those days when you want something homemade without spending half the day in the kitchen.

Storage and Substitutions

These bars keep beautifully in an airtight container at room temperature for up to four days, so you can bake them ahead of time without stress. If you can't find Cadbury mini eggs or pastel M&Ms, regular chocolate chips and M&Ms work just fine—the magic is in the texture and the idea, not the exact candy.

• For an extra gooey center, pull them out at the earlier end of that 23-26 minute window.
• If you're worried about allergies, always check your candy labels because manufacturers change their facilities and formulas.
• These freeze beautifully for up to a month if you want to bake them early and save them for later.

Pin It

These cookie bars have a way of becoming the thing people ask you to bring to every gathering. They're simple enough that baking them feels like you're doing something nice rather than something stressful.

Recipe FAQs

→ How can I ensure the bars stay soft and chewy?

To keep the bars soft, avoid overbaking and pull them out when the edges are golden and the center is just set. Slightly underbaking can enhance gooeyness.

→ Can I substitute the Cadbury mini eggs and pastel M&Ms?

Yes, you can use mini chocolate eggs or regular M&Ms if Cadbury mini eggs or pastel M&Ms are unavailable, maintaining a similar flavor and texture.

→ What pan size is recommended for baking these bars?

A 9x13-inch baking pan lined with parchment paper is ideal for even baking and easy removal of the bars.

→ What is the best way to store the bars after baking?

Store the bars in an airtight container at room temperature for up to four days to preserve freshness and softness.

→ Can these bars be made vegetarian-friendly?

Yes, the bars are vegetarian as they contain no meat products, but always check candy coatings for specific dietary concerns.