This Rhubarb Strawberry Crisp is a tasty mix of sweet strawberries and tangy rhubarb, all topped with a crunchy oat topping. It’s perfect as a dessert or sweet snack!
Honestly, who can resist that warm, fruity filling and crisp topping? I love serving it with a scoop of ice cream. You’ll be going back for seconds, trust me! 🍓
Key Ingredients & Substitutions
Rhubarb: This is the star of your crisp! Fresh rhubarb gives that tart flavor that’s so refreshing. If you can’t find rhubarb, try using tart cherries or an extra amount of strawberries, but keep in mind the taste will change!
Strawberries: Fresh strawberries work best for that sweetness and texture. If they’re out of season, frozen strawberries can be a good substitute—just make sure to thaw and drain excess liquid before using.
Sugar: Granulated sugar is essential, but you can reduce the amount if your strawberries are sweet. For a different flavor, try coconut sugar or maple syrup in place of granulated sugar.
Cornstarch: This ingredient helps thicken the fruit filling. If you don’t have cornstarch, try using all-purpose flour, though it may not be as effective in thickening.
Butter: Unsalted butter is preferred for controlling saltiness, but if you’re in a pinch, you can use salted butter. Just lessen the added salt in the recipe.
How Do I Achieve a Perfect Topping for My Crisp?
The topping is crucial for a great Rhubarb Strawberry Crisp! You want it to be crumbly and golden brown. Here’s how to get it right:
- Ensure your butter is cold. It helps create that crumbly texture. Cut it into small pieces before mixing.
- Use your fingertips or a pastry cutter to blend the butter quickly into the oats and flour mixture. Don’t overmix; it should still look crumbly.
- Evenly spread the topping over the fruit mixture to allow it to cook uniformly.
Allowing it to cool slightly after baking helps to set the filling and makes serving easier. Enjoy with a scoop of ice cream or whipped cream for that extra treat!

How to Make Rhubarb Strawberry Crisp
Ingredients You’ll Need:
For the Fruit Filling:
- 4 cups rhubarb, chopped into 1/2-inch pieces
- 4 cups fresh strawberries, hulled and halved
- 1 cup granulated sugar (adjust based on sweetness of fruit)
- 2 tablespoons cornstarch
- 1 teaspoon vanilla extract
For the Crisp Topping:
- 1 cup old-fashioned rolled oats
- 1/2 cup all-purpose flour
- 1/2 cup packed light brown sugar
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon salt
- 1/2 cup unsalted butter, cold and cut into small pieces
For Serving (optional):
- Vanilla ice cream or whipped cream
- Fresh mint leaves, for garnish
How Much Time Will You Need?
This Rhubarb Strawberry Crisp will take about 15 minutes to prepare and 40-45 minutes to bake. After that, let it cool for a few minutes before serving. In total, you’re looking at about 1 hour (including prep and bake time) for this tasty dessert!
Step-by-Step Instructions:
1. Preheat the Oven:
Start by preheating your oven to 350°F (175°C). This is important to make sure your crisp cooks evenly!
2. Prepare the Fruit Filling:
In a large mixing bowl, combine the chopped rhubarb, halved strawberries, granulated sugar, cornstarch, and vanilla extract. Gently toss everything together so the fruit is nicely coated. Once mixed, pour this fruity goodness into a greased baking dish. This is going to be the heart of your crisp!
3. Make the Crisp Topping:
In another bowl, mix together the rolled oats, flour, brown sugar, ground cinnamon, and salt. This will create a sweet, crumbly topping for your fruit.
4. Combine with Butter:
Add the cold butter pieces into the dry ingredients. Using your fingertips or a pastry cutter, blend the butter into the mixture until it resembles coarse crumbs. This will give your topping that lovely crispy texture!
5. Assemble and Bake:
Sprinkle the oat topping evenly over the fruit mixture in the baking dish. Bake it in the preheated oven for about 40-45 minutes. You want the topping to be golden brown and the fruit filling to be bubbling nicely—this means it’s ready!
6. Cool and Serve:
Once baked, remove the crisp from the oven and let it cool slightly for about 10 minutes. This will make it easier to serve. When you’re ready, serve it warm, topped with a scoop of vanilla ice cream or whipped cream, and garnish with a fresh strawberry and a mint leaf if you like!
Enjoy your delicious Rhubarb Strawberry Crisp!
Can I Use Frozen Rhubarb or Strawberries?
Yes, you can use frozen rhubarb or strawberries! Just make sure to thaw them first and drain any excess liquid to prevent a soggy crisp. Keep in mind that frozen fruit might require a bit more baking time.
Can I Reduce the Sugar in This Recipe?
Absolutely! If your strawberries are particularly sweet, feel free to reduce the amount of granulated sugar. Taste the fruit mixture before baking, and adjust the sugar to your liking. You can also use natural sweeteners like honey or maple syrup if you prefer!
How Should I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, warm it gently in the oven or microwave. If it’s a little dry, add a splash of water or a dollop of ice cream on top while reheating.
What’s the Best Way to Serve Rhubarb Strawberry Crisp?
This dish is best served warm, fresh out of the oven! Pair it with a scoop of vanilla ice cream or whipped cream for a delightful contrast to the tartness of the rhubarb and strawberries. Fresh mint leaves also add a nice touch of flavor and color!
