By Alexandra EmanuelliView →
RAINBOW CHEW
The 3-Ingredient Lucky Charms Treats I've Been Making for 10 Years
★★★★★
5.0 (380)|(2 Reviews)Chewy cereal bars packed with sweet toasted oat cereal, pastel marshmallow charms, and melted butter.
M
By Meghan Splawn (Recipe Developer)•Published April 24, 2026
⏱ 1 hr 10 mins (incl. cooling)
Simply Recipes / Meghan Splawn🔥 160 kcal
WHY MAKE THIS
- Ready in 10 minutes with zero baking.
- Beloved by kids and nostalgic adults alike.
RAINBOW CHEW
The 3-Ingredient Lucky Charms Treats I've Been Making for 10 Years
A colorful upgrade to Rice Krispies treats: swap in Lucky Charms cereal for festive marshmallow rainbows, hearts, and stars in every buttery, chewy bite. Difficulty: Super Easy.
Prep Time10 mins
Cook Time5 mins
Total Time1 hr 10 mins (incl. cooling)
Servings16 servings
Scale Recipe:
📱Keep Screen Awake While Cooking
Ingredients
- 6 cups Lucky Charms cereal (plus 1/2 cup extra for topping)
- 1 bag (10 oz) mini marshmallows
- 4 tbsp (1/2 stick) unsalted butter
- 1/2 tsp pure vanilla extract
Directions
1
Melt butter and marshmallows
Melt butter in large pot over low heat. Add marshmallows and stir until melted and silky.
2
Stir in cereal and press
Remove from heat; fold in Lucky Charms cereal. Press gently into buttered 9x13 dish; press extra cereal charms on top.
3
Cool and slice
Let cool 1 hour until set before cutting into squares.
💡 CHEF'S PRO TIPS
- Press the cereal into the pan gently with buttered fingertips—pressing too hard makes the bars dense and hard.
Nutrition Facts
Per ServingCalories160 kcal
Protein2g
Carbs30g
Total Fat4g
Sodium: 140mg
Fiber: 1g
Sugar: 2g
Community Reviews & Ratings
2 cooks have shared their thoughts on this recipe
S
Sarah M.★★★★★
This has completely replaced my normal avocado toast! The beans blend so well you cannot even tell, and I stay full until lunchtime!
D
David K.★★★★★
Great trick for adding protein without cooking eggs on busy mornings. Added a pinch of red pepper flakes and lemon zest—delicious.
