Soft M&M Cookie Bars deliver thick, chewy cookie texture in easy-to-slice squares, loaded with colorful M&Ms and melty chocolate chips for bursts of chocolate and crunch in every bite. These bars bake from a simple melted-butter dough that mixes quickly without a mixer, spreads into a 9×13 pan, and turns golden at the edges while staying soft in the center—ideal for holiday trays, cookie exchanges, potlucks, or everyday treats. Cornstarch in the dry mix keeps them tender instead of cakey, and the high ratio of sugars ensures chewiness that holds up for days.
Why you’ll love this recipe starts with the no-fuss method: no chilling dough, no scooping individual cookies, just one bowl for wets, one for dries, and a quick fold of candies before pressing into the pan. Reviewers praise the soft, bakery-style results when baked precisely to 26-30 minutes in a metal pan, though some note greasiness if butter cools too much or oven runs hot—tenting with foil prevents over-browning. Festive with holiday M&Ms or classic colors, they slice into 24 generous bars that travel well and freeze beautifully for make-ahead baking.
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