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Rhubarb and Strawberry Oat Crumble Casserole

Rhubarb and Strawberry Oat Crumble Casserole
50min Total Time
8 people Servings
Medium Difficulty
Moderate Cost
280 kcal Calories

Savor the delightful blend of sweet strawberries and tart rhubarb in this mouthwatering Oat Crumble Casserole, perfect for any gathering!


Ingredients

8
  • 2 cups rhubarb, chopped
  • 2 cups strawberries, sliced
  • 1/2 cup granulated sugar
  • 1 tablespoon cornstarch
  • 1 teaspoon vanilla extract
  • 1 teaspoon ground cinnamon
  • 1 cup rolled oats
  • 1/2 cup all-purpose flour
  • 1/2 cup brown sugar
  • 1/4 cup unsalted butter, melted
  • 1/4 teaspoon salt

Instructions

1

Preheat the oven to 350°F (175°C).

2

In a large mixing bowl, combine the rhubarb, strawberries, granulated sugar, cornstarch, vanilla extract, and cinnamon. Mix well and set aside.

3

In another bowl, combine the rolled oats, flour, brown sugar, melted butter, and salt. Mix until crumbly.

4

Spread the fruit mixture in a greased casserole dish evenly.

5

Sprinkle the oat mixture over the fruit layer.

6

Bake in the preheated oven for about 35-40 minutes, or until the topping is golden brown and the fruit is bubbling.

7

Allow to cool slightly before serving.

Kitchen Tools

  • Mixing bowls
  • Casserole dish
  • Measuring cups
  • Spoon or spatula
  • Oven mitts

Chef's Tips

For a crunchier topping, let the crumble bake for an additional 5-10 minutes.
Serve warm with whipped cream or ice cream for a delightful treat.
Adjust sugar based on your preference for sweetness.

Troubleshooting

If the crumble is too soggy, add more oats or flour to the topping.
If it doesn't brown nicely, increase the oven temperature slightly towards the end of baking.

Recipe Variations

Add nuts like pecans or walnuts to the crumble for added texture.
Incorporate other berries like blueberries or raspberries for a mixed berry crumble.
Use coconut flakes in the topping for a tropical twist.

Healthy Alternatives

Replace granulated sugar with honey or maple syrup.
Use coconut oil in place of butter for a dairy-free option.
Substitute almond flour for all-purpose flour for a gluten-free version.

Serving Suggestions

Pair with vanilla ice cream for a classic dessert.
Serve with a dollop of Greek yogurt for a lighter option.
Enjoy alongside a cup of tea or coffee.

Nutrition Facts

280
Calories
3g
Protein
46g
Carbs
10g
Fat
5g
Fiber
22g
Sugar
100mg
Sodium
15mg
Cholesterol

Dietary Info

Vegetarian
Lactose-free

Garnish Ideas

Sprinkle with powdered sugar before serving.
Add fresh mint leaves for a pop of color and flavor.
Top with citrus zest for added freshness.

Storage

Store in an airtight container in the refrigerator for up to 3 days.
Reheat in the oven for best results or microwave individual portions.

Leftover Ideas

Use leftovers as a topping for yogurt parfaits.
Transform into a breakfast bowl by mixing with oats and milk.
Make smoothie bowls by blending with a banana and milk.

Common Mistakes to Avoid

Not adjusting sugar based on the tartness of rhubarb.
Overbaking, which can lead to a dry topping.
Not allowing the crumble to cool before serving, which can make it crumbly.

Frequently Asked Questions

Can I use frozen rhubarb and strawberries for this recipe?

Yes, frozen fruits can be used, just be sure to thaw and drain excess moisture before mixing.

How can I make this recipe gluten-free?

Simply substitute the all-purpose flour with a gluten-free flour blend and ensure your oats are certified gluten-free.

Can I prepare this casserole in advance?

Yes, you can prepare it a day ahead and bake it just before serving.

What other fruits can I add?

You can add peaches, apples, or even mixed berries for a fruit medley crumble.

How should I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 3 days.

Reviews

Emma
Apr 18, 2026
This crumble is a hit at every gathering!
James
Apr 17, 2026
Absolutely delicious, but I wish the topping was a bit crunchier.
Olivia
Apr 25, 2026
Good flavor, but I found it a little too sweet for my taste.
Liam
Apr 16, 2026
A perfect mix of tart and sweet, will make again!
Sophia
Apr 5, 2026
Very easy to make and loved by my family!
Mason
Apr 25, 2026
The best summer dessert I've tried!
Ava
Apr 22, 2026
I paired it with ice cream and it was heavenly!
Noah
Apr 7, 2026
A wonderful recipe that I will cherish!
Isabella
Mar 28, 2026
It was good but I expected more from the topping texture.
Elijah
Apr 21, 2026
Easy and quick to make, definitely recommend!
Charlotte
Apr 9, 2026
The oats on top give it a great crunch!
Lucas
Apr 9, 2026
A lovely dish to share with friends.
Mia
Apr 5, 2026
My kids loved it! Will definitely make it again.
Oliver
Apr 11, 2026
Very flavorful, but I prefer a little less sugar.
Amelia
Apr 18, 2026
Best crumble ever! Totally addictive.
Ethan
Apr 4, 2026
Perfect summer dessert; fresh and fruity!
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