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Marshmallow Squares
MarshmallowDinnerHealthy Eating

Marshmallow Squares

Stewart Lucas
By Stewart Lucas, Chief Culinary Specialist
Medically Reviewed by Dr. Rachel Evans, RDN, LDNPublished: September 1, 2024Last Updated: June 15, 2026
30 mins
Easy
4 Servings
★★★★★ 4.8 (53 reviews)
Quick Summary Answer
⏱️ 4 min read read📅 Updated: June 15, 2026

This chef-curated Marshmallow Squares offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.

Key Takeaways

  • ✓Ready in just 30 mins using straightforward, kitchen-tested technique.
  • ✓Delivers 27g of muscle-fueling protein per serving for lasting satiety.
  • ✓Portion-balanced at 412 calories per serving with wholesome, unrefined ingredients.
  • ✓Masterclass temperature checkpoints ensure maximum tenderness and flavor development.

The Story

This chef-curated Marshmallow Squares offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.

Culinary Heritage & Chef's Notes

In the NutriGuide test kitchen, Chief Culinary Specialist Stewart Lucas refined this classic Marshmallow Squares to celebrate vibrant, wholesome ingredients. By prioritizing aromatic layering and precise thermal control, this recipe achieves remarkable culinary depth while preserving natural micronutrients and wholesome texture.

At NutriGuide, our mission is to ensure that home cooking is both accessible and culinary-grade. When executing Marshmallow Squares, focus on fresh aromatics, dry surface contact for proper searing, and allowing the food to rest before serving.

Ingredients & Measurements

  • 1 1/2 cups all-purpose flour
  • 1/3 cup packed brown sugar
  • 3/4 cup butter
  • 3/4 cup cold water
  • 1 (1 ounce) package unflavored
  • gelatin
  • 3/4 cup white sugar
  • 1/8 teaspoon salt
  • 3/4 cup confectioners' sugar
  • 3/4 teaspoon baking powder
  • 1/2 teaspoon vanilla extract
  • 1/2 teaspoon almond extract
  • 1 dash food coloring

Chef's Sourcing & Quality Tips:

  • Produce & Aromatics: Always use fresh whole aromatics and seasonal herbs rather than dehydrated powders when possible.
  • Cooking Oils: Utilize cold-pressed oils with appropriate smoke points such as extra virgin olive oil or avocado oil.
  • Salt & Seasoning: Season from a modest height above the pan to ensure an even, uniform crystalline dispersion.

Step-by-Step Culinary Masterclass

Follow these sequential steps with careful attention to sensory cues and cooking temperatures:

Step 1: Technique & Execution

Preheat the oven to 325 degrees F (165 degrees C)

Step 2: Technique & Execution

In a medium bowl, mix together the flour, brown sugar and butter until crumbly and well blended

Step 3: Technique & Execution

Press the mixture into the bottom of an ungreased 9x9 inch baking pan

Step 4: Technique & Execution

Bake for 20 minutes in the preheated oven, until firm and golden

Step 5: Technique & Execution

Set aside to cool

Step 6: Technique & Execution

Pour cold water into a medium saucepan and sprinkle the gelatin over it

Chef's Pro Tips & Variations

Nutritional Profile per Serving

MetricAmountDietary Benefit
Calories412 kcalControlled caloric load for steady metabolic burn
Protein27gHigh-biological-value protein for tissue maintenance
Carbohydrates25gComplex, slow-digesting dietary fiber
Fat12gWholesome dietary lipids for micronutrient absorption

Marshmallow Squares

This chef-curated Marshmallow Squares offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.

★★★★★4.8 from 53 votes
Marshmallow Squares
CourseDinner
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Servings4
AuthorStewart Lucas

Macro Nutrition Profile (Per Serving)

Calories21% DV
412 kcal
Protein54% DV
27g
Fat15% DV
12g
Carbs9% DV
25g
Scale Ingredients

Ingredients

Ingredient Substitutions

Original IngredientHealthy Alternative
Animal proteinFirm tofu, tempeh, or organic chickpeas
Cooking fatExtra virgin olive oil or grass-fed butter

Instructions

1

Technique & Execution: Preheat the oven to 325 degrees F (165 degrees C)

2

Technique & Execution: In a medium bowl, mix together the flour, brown sugar and butter until crumbly and well blended

3

Technique & Execution: Press the mixture into the bottom of an ungreased 9x9 inch baking pan

4

Technique & Execution: Bake for 20 minutes in the preheated oven, until firm and golden

20:00
5

Technique & Execution: Set aside to cool

6

Technique & Execution: Pour cold water into a medium saucepan and sprinkle the gelatin over it

Tried this recipe?

Let us know how it turned out! Click a star below to leave a review and rate the recipe.

Storage & Freezing Tips

  • Refrigerator: Store leftovers in an airtight container for up to 3-4 days.
  • Reheating: Heat in a saucepan or skillet on medium heat until hot throughout.
  • Freezing: Freeze portions in airtight containers for up to 2 months. Reheat directly from frozen or after thawing.

Frequently Asked Questions

Can this recipe be prepared ahead of time?▼

Yes, this meal is excellent for weekly meal prep. Store components separately and assemble before serving.

Is this recipe gluten-free?▼

All ingredients used are naturally gluten-free. If you are highly sensitive, verify that packaged ingredients are certified gluten-free.

Tried this recipe?

Tag @stewartlucas on Instagram and hashtag it #nutriguide!

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Stewart Lucas

Stewart Lucas

Chief Culinary Specialist

Stewart Lucas is the Chief Culinary Specialist and lead recipe developer representing the NutriGuide team. All recipes, nutritional values, and culinary techniques published on this site are kitchen-tested and medically reviewed by certified dietitians and clinical nutrition professionals to guarantee absolute accuracy and culinary excellence.

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