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Rumbleberry Crisp
OatmealDinnerHealthy Eating

Rumbleberry Crisp

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
★★★★★ 4.9 (52 reviews)
Quick Summary Answer
⏱️ 4 min read read📅 Updated: June 15, 2026

This chef-curated Rumbleberry Crisp 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 22g of muscle-fueling protein per serving for lasting satiety.
  • ✓Portion-balanced at 399 calories per serving with wholesome, unrefined ingredients.
  • ✓Masterclass temperature checkpoints ensure maximum tenderness and flavor development.

The Story

This chef-curated Rumbleberry Crisp 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 Rumbleberry Crisp 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 Rumbleberry Crisp, focus on fresh aromatics, dry surface contact for proper searing, and allowing the food to rest before serving.

Ingredients & Measurements

  • 1 cup chopped rhubarb
  • 1 cup fresh blackberries
  • 1 cup raspberries
  • 1 cup fresh blueberries
  • 2 cups thinly sliced apples
  • 2 cups white sugar
  • 3 tablespoons cornstarch
  • 1 teaspoon ground cinnamon
  • 1 pinch ground nutmeg
  • 2 cups rolled oats
  • 1 cup packed brown sugar
  • 1/2 cup all-purpose flour
  • 1/4 cup butter
  • 1/2 teaspoon ground cinnamon

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 oven to 400 degrees F (175 degrees C)

Step 2: Technique & Execution

In a large bowl, mix together rhubarb, blackberries, raspberries, blueberries and sliced apples

Step 3: Technique & Execution

In a separate bowl, combine the sugar, cornstarch, cinnamon and nutmeg together and blend with the fruit

Step 4: Technique & Execution

Pour fruit mixture into a 9x13 inch glass baking dish

Step 5: Technique & Execution

For the topping: In a large bowl, mix the oatmeal, flour, brown sugar and 1/2 teaspoon cinnamon together

Step 6: Technique & Execution

Add the butter in little pats and cut into the flour mixture until it looks crumbly, (no big chunks)

Chef's Pro Tips & Variations

Nutritional Profile per Serving

MetricAmountDietary Benefit
Calories399 kcalControlled caloric load for steady metabolic burn
Protein22gHigh-biological-value protein for tissue maintenance
Carbohydrates21gComplex, slow-digesting dietary fiber
Fat20gWholesome dietary lipids for micronutrient absorption

Rumbleberry Crisp

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

★★★★★4.9 from 52 votes
Rumbleberry Crisp
CourseDinner
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Servings4
AuthorStewart Lucas

Macro Nutrition Profile (Per Serving)

Calories20% DV
399 kcal
Protein44% DV
22g
Fat26% DV
20g
Carbs8% DV
21g
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 oven to 400 degrees F (175 degrees C)

2

Technique & Execution: In a large bowl, mix together rhubarb, blackberries, raspberries, blueberries and sliced apples

3

Technique & Execution: In a separate bowl, combine the sugar, cornstarch, cinnamon and nutmeg together and blend with the fruit

4

Technique & Execution: Pour fruit mixture into a 9x13 inch glass baking dish

5

Technique & Execution: For the topping: In a large bowl, mix the oatmeal, flour, brown sugar and 1/2 teaspoon cinnamon together

6

Technique & Execution: Add the butter in little pats and cut into the flour mixture until it looks crumbly, (no big chunks)

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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