Gluten-Free Mississippi Mud Brownies with Marshmallow Frosting
These indulgent gluten-free brownies capture the essence of Mississippi mud pie in bar form. Rich chocolate brownies topped with toasted marshmallows and a glossy chocolate frosting create layers of gooey, fudgy texture. The combination of cocoa and pecans delivers deep chocolate flavor with a satisfying crunch. Perfect for potlucks, family gatherings, or when you need a crowd-pleasing dessert that happens to be gluten-free. The marshmallow layer adds a playful twist that makes these brownies irresistible to both kids and adults.
Ingredients
- 1 ¼ cups granulated sugar
- ½ cup butter
- ½ teaspoon salt
- 1 teaspoon gluten-free vanilla
- 2 eggs
- ¾ cup Betty Crocker All-Purpose Gluten Free Rice Flour Blend
- ½ cup unsweetened baking cocoa
- ½ cup pecans, chopped, toasted
- 2 cups miniature marshmallowsregular marshmallows1:1 choppednone
cut into smaller pieces for even coverage
- ¼ cup butter
- 3 tablespoons milk
- 3 tablespoons unsweetened baking cocoa
- ½ teaspoon gluten-free vanilla
- 2 ¼ cups powdered sugar
Instructions
- 1
Heat oven and grease bottom of square pan
- 2
Heat granulated sugar and butter in saucepan, stirring frequently, just until butter melts
- 3
Cool mixture for specified time
- 4
Beat in salt, vanilla and eggs with spoon
- 5
Stir in flour blend and baking cocoa, then stir in pecans
- 6
Spread batter in prepared pan
- 7
Bake until brownies begin to pull away from edge of pan
- 8
Immediately sprinkle with marshmallows
- 9
Set oven control to broil and broil until marshmallows are puffed and beginning to brown
- 10
Meanwhile, heat butter, milk and baking cocoa in saucepan over medium heat until butter melts and mixture is smooth
- 11
Stir in vanilla and powdered sugar until thick yet pourable
- 12
Pour frosting over marshmallow layer, spreading with spatula to cover
- 13
Cool completely on cooling rack
- 14
Cut into squares
Tips
Toast pecans in a dry skillet for 2-3 minutes to enhance their nutty flavor before adding to the batter.
Watch the marshmallows carefully while broiling as they can go from perfectly golden to burnt very quickly.
Let the frosting cool slightly before pouring to prevent it from melting the marshmallows completely.
Good to Know
Store covered at room temperature for up to 3 days or refrigerate for up to 1 week.
Can be made 1 day ahead. Cover and store at room temperature.
Serve at room temperature. Cut with a sharp knife for clean squares.
Common Mistakes
Don't overbake the brownies or they will be dry rather than fudgy.
Watch marshmallows closely under broiler to avoid burning.
Substitutions
Dairy-Free Swaps
General Alternatives
cut into smaller pieces for even coverage
FAQ
Can I make these without the marshmallow layer?
Yes, skip the marshmallow step and pour the chocolate frosting directly over the cooled brownies for a simpler version.
How long do these brownies keep?
Store covered at room temperature for up to 3 days or refrigerate for up to 1 week for best quality.
Can I freeze these brownies?
Yes, wrap individual squares in plastic wrap and freeze for up to 3 months. Thaw at room temperature before serving.