Some desserts simply overwhelm with sugar. This strawberry rhubarb crisp is more refined: bright, tart rhubarb balanced by sweet strawberries and finished with a buttery oat-pecan topping that stays crisp. Serve it warm with vanilla ice cream for a classic summer dessert that feels special without fuss.
This crisp features a jammy strawberry-rhubarb filling thickened with a touch of cornstarch, and a golden oat-and-pecan topping that keeps its crunch. The contrast of tangy fruit and rich, nutty crumble is what makes it a go-to for warm-weather baking.
Here’s Why This Strawberry Rhubarb Crisp Recipe Works
- Balanced fruit-to-sugar ratio: A brief sugar soak tames the rhubarb’s sharpness while preserving its flavor.
- Jammy but not gluey filling: Cornstarch plus a little reserved rhubarb juice thickens the filling so it sets without becoming gummy.
- Topping that stays crisp: Rolled oats, flour, brown sugar, and butter bake into a crisp, crumbly topping instead of sinking into the fruit.
- Extra texture from toasted pecans: Toasted pecans add crunch and a deeper, toasty flavor to the crumble.
Key Ingredients
Rhubarb: Use firm, brightly colored stalks. Both pale green and deep red stalks work; slice thicker stalks a bit thinner so they soften evenly.
Strawberries: Fresh, hulled, and quartered if large. They add natural sweetness that balances the rhubarb.
Cornstarch: Thickens the fruit juices to create a saucy, jam-like filling.
Lemon juice: A small amount brightens the fruit and enhances the tart-sweet balance.
Old-fashioned rolled oats: Provide the classic oat texture in the topping; avoid quick oats, which tend to soften.
Butter: Softened butter works into the dry topping to form crisp clusters.
Toasted pecans: Toasting deepens their flavor and keeps them crunchy in the finished topping.
Recipe Tips
- Soak fruit separately: Let rhubarb and strawberries sit with sugar in separate bowls to draw off excess liquid before combining.
- Reserve only 1/4 cup juice: Keep a small amount of rhubarb liquid to mix with cornstarch; too much liquid makes the filling runny.
- Cut in the butter well: Use a pastry blender or fork to work butter into the dry topping until crumbly for the best texture.
- Use a metal baking dish if possible: Metal browns more evenly and helps the topping crisp up.
- Let it rest: Allow the crisp to cool about 20 minutes after baking so the filling sets and the topping stays crisp.
Strawberry Rhubarb Oat Crisp
This recipe leans into the classic sweet-tart profile of strawberry and rhubarb. The fruit becomes saucy while the oat-pecan topping turns golden and crunchy. Serve warm with vanilla ice cream for a comforting finish everyone will love.
Prep Time: 30 mins • Cook Time: 1 hr • Total Time: 1 hr 30 mins • Servings: 10 • By: Pat Nyswonger
Ingredients
Fruit Filling
- 12 to 15 stalks fresh rhubarb, sliced (about 7½ cups)
- 1¼ cups granulated sugar, divided (about 250 g)
- 1 pound fresh strawberries, hulled and quartered (about 3½ cups)
- 3 tablespoons cornstarch
- 1 lemon, juiced
- 1 teaspoon vanilla extract
Crisp Topping
- 1½ cups brown sugar (about 300 g)
- 1¼ cups all-purpose flour (about 150 g)
- 1¼ cups old-fashioned rolled oats (about 90 g)
- 1½ teaspoons ground cinnamon
- ¾ teaspoon salt
- ½ cup (113 g) butter, softened and cut into pieces
- 1 cup toasted pecans, coarsely chopped
Instructions
- Preheat the oven to 375°F (190°C). Lightly oil or spray a 9×13-inch baking dish and set aside.
- In a medium bowl, toss the sliced rhubarb with 3/4 cup of the granulated sugar. Let sit 15 minutes, stirring occasionally to draw out some liquid.
- In a separate bowl, toss the strawberries with the remaining 1/2 cup sugar and let stand 10 minutes, stirring occasionally.
- While the fruit rests, combine the brown sugar, flour, oats, cinnamon, and salt in a large bowl. Cut in the butter with a pastry blender or fork until the mixture is crumbly, then stir in the toasted pecans and set the topping aside.
- Pour off and discard all but 1/4 cup of the liquid that has accumulated from the rhubarb. Add the drained rhubarb to the strawberries and gently toss to combine.
- In a small bowl, whisk the cornstarch with the reserved 1/4 cup rhubarb juice, lemon juice, and vanilla until smooth. Stir this mixture into the combined fruit to thicken the filling.
- Transfer the fruit to the prepared baking dish and distribute the topping evenly over the fruit.
- Bake in the middle of the oven 30 minutes, then reduce the temperature to 325°F (165°C) and bake an additional 25–30 minutes, until the filling bubbles at the edges and the topping is golden brown.
- Let the crisp rest about 20 minutes before serving so the filling can set. Serve warm, optionally with vanilla ice cream.
Notes
- Slice thick rhubarb thinner: If stalks are large, cut them smaller so they soften at the same rate as strawberries.
- Toast the pecans first: A quick toast in a dry skillet or in the oven enhances their flavor and keeps them crunchy.
- Watch for bubbling edges: The crisp is done when the filling is bubbling around the edges—this indicates the cornstarch has thickened.
- Adjust sweetness: If your strawberries are very sweet, reduce the sugar slightly; if the rhubarb is extra tart, keep the full amount for balance.
Nutrition (approximate per serving)
Serving: 1 • Calories: 495 kcal • Carbohydrates: 83 g • Protein: 5 g • Fat: 18 g • Saturated Fat: 7 g • Polyunsaturated Fat: 10 g • Cholesterol: 24 mg • Sodium: 245 mg • Fiber: 5 g • Sugar: 55 g
