Nutty Chocolate & Mashmallow Muffins

These chocolate muffins take cues from the classic rocky-road combination, with chopped walnuts and chopped marshmallows folded into a tender chocolate sour cream batter. The marshmallow chunks melt slightly during baking, leaving sticky-sweet pockets through the muffins that soften and become almost gooey when the muffins are eaten warm.

Sour cream is the secret to the tender crumb. The acidity of sour cream tenderizes the gluten and reacts with the baking powder for extra lift, giving you muffins that are rich and moist rather than dry and dense the way melted-chocolate muffins often turn out.

Fold the marshmallows in last, gently. Mix them in early and they break down into the batter, losing the textural surprise. Folded in last, they stay as visible chunks that survive the bake intact.

Kitchen Tips

• Use mini marshmallows cut in half if you can’t be bothered to chop large ones.
• Don’t overbake; pull at 18 minutes when a toothpick comes out with moist crumbs (not clean) for the best chocolate muffin texture.
• Let cool 5 minutes in the pan; warm marshmallow muffins are too sticky to lift cleanly.
• Best eaten the same day; marshmallows continue to absorb moisture and can turn the muffins damp by day two.

Variations

• Use pecans instead of walnuts for a sweeter nuttier flavor.
• Add ½ cup chocolate chips for double chocolate.
• Drizzle cooled muffins with melted chocolate and a sprinkle of crushed graham crackers for a s’mores-style finish.