Averie Cooks

-1 Preheat oven to 350F. Line an 8-by-8-inch baking pan with aluminum foil, spray with cooking spray; set aside.
-1 In a large, microwave-safe bowl melt the butter, about 1 minute on high power.
-1 Wait momentarily before adding the egg so you don’t scramble it. Add the egg, brown sugar, vanilla, and whisk until smooth.
-1 Add the flour and stir until just combined, don’t overmix.
-1 Stir in 1 cup M&Ms
-1 Turn batter out into prepared pan, smoothing the top lightly with a spatula.
-1 Add remaining M&Ms to top of batter, dispersing them evenly, and pressing them down lightly with your finger.
-1 Bake for about 23 minutes, or until done. At 23 minutes (shown in photos) they’re very soft and moist; if you like firmer and dryer bars, bake for a few minutes longer. A toothpick inserted in the center should come out clean, or with a few moist crumbs, but no batter.
-1 Allow bars to cool in pan for at least 30 minutes before slicing and serving.