If you hopped over from our @recipestokitchen Pinterest community, welcome to my kitchen! Today I’m sharing my tested, no-fail recipe for Gooey Christmas Cookie Bars—complete with ingredient swaps, visual step-by-step cues across 4 pages, and a printable recipe card below.
📌 Pin Recipe
1. Why This Recipe Works Every Time
In my test kitchen, I’m always looking for recipes that give you that ‘wow’ without a ton of fuss. These gooey Christmas cookie bars came about one December when I wanted a cookie tray showstopper but didn’t have time for rolling and chilling dough. The result is a one-bowl wonder that bakes into a chewy, buttery bar with a crackly top and melty chocolate pockets.
What makes them work every time is the ratio of brown sugar to butter—it locks in moisture, so the centers stay soft and gooey for days. And because you press the whole thing into a pan, there’s no scooping, no chilling, and no waiting. They’re the kind of treat that disappears before you even get a photo, which is exactly what happened at my family’s Christmas party.
👩🍳 Chef Elena’s Test Kitchen Highlights (Page 1 of 4)
- Foolproof Ratios: Triple-tested with everyday supermarket ingredients so it works on your very first try.
- Balanced Flavor: Layered aromatics and proper pan temperature create rich, homemade depth without complicated steps.
- Save for Later: Tap 📌 Pin Recipe to save this dish to your dinner or baking board.
Tap Next Page (Page 2) below for my Key Ingredients & Easy Substitutions, or scroll down to check off the full Recipe Card!
Gooey Christmas Cookie Bars
These gooey Christmas cookie bars are a cross between a soft-baked cookie and a blondie, loaded with festive M&Ms and chocolate chips. They're ridiculously easy to throw together, and the edges get golden while the centers stay perfectly chewy and indulgent.
🛒 Ingredients (Check Off As You Measure)
🍳 Step-by-Step Instructions
- Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving overhang on two sides for easy lifting.
- In a large bowl, whisk together the melted butter and brown sugar until smooth. Beat in the egg and vanilla until fully combined.
- Add the flour, baking powder, and salt, and stir with a spatula until just combined—don't overmix. Fold in 3/4 cup of the M&Ms and all the chocolate chips.
- Spread the batter evenly into the prepared pan. Sprinkle the remaining 1/4 cup M&Ms over the top, pressing them in lightly.
- Bake for 22–25 minutes, until the edges are set and golden but the center still looks slightly underdone. Cool completely in the pan before slicing into 16 bars.
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👩🍳 Chef Elena’s Kitchen Notes & Storage
For extra gooeyness, pull the bars out when a toothpick inserted in the center comes out with moist crumbs—they'll set as they cool. Store in an airtight container at room temperature for up to 4 days, or freeze for up to 3 months.
Pinterest Kitchen Tip: Save this recipe to your @recipestokitchen board so you can pull up the ingredient checklist at the grocery store!
