Strawberry Rhubarb Crisp Oat

A close-up of Strawberry Rhubarb Crisp with a golden oat crumble topping, served warm in a ceramic dish. Pin it
A close-up of Strawberry Rhubarb Crisp with a golden oat crumble topping, served warm in a ceramic dish. | jasminerecipes.com

This dish highlights juicy strawberries and tart rhubarb beneath a buttery oat crumble. The fruit filling is gently tossed with sugar, lemon juice, and vanilla to enhance brightness and balance sweetness. A blend of flour, oats, brown sugar, cinnamon, and cold butter creates a crisp, golden topping once baked. Perfectly warm and comforting, it's ideal served with vanilla ice cream for contrast. Nutritionally moderate and vegetarian-friendly, it offers a delightful, easy-to-make finish to any meal.

The first time rhubarb crossed my path, I was completely baffled by those bright red celery-like stalks sitting in my grandmother's kitchen. She explained that only the stalks are edible and that the tartness needs serious sugar taming, preferably alongside sweet strawberries. That afternoon lesson taught me that some of the most surprising spring flavors come in peculiar packages.

Last June, I brought this crisp to a potluck when the host casually mentioned loving rhubarb. Her face lit up when she took that first warm bite, and she proceeded to tell everyone about how her grandmother used to grow rhubarb along the back fence. Sometimes food really does connect us to the sweetest memories.

Ingredients

  • 3 cups fresh strawberries, hulled and quartered: Pick berries that give slightly when gently squeezed, and let them come to room temperature before mixing for better sweetness distribution
  • 3 cups fresh rhubarb, sliced 1/2-inch thick: The stalks should be firm and brightly colored, avoiding any that feel limp or have dry ends
  • 2/3 cup granulated sugar: This amount balances the rhubarb's natural tartness without overpowering the strawberries
  • 2 tbsp cornstarch: Essential for thickening all those fruit juices into a luscious sauce instead of a soupy mess
  • 1 tsp vanilla extract: Use pure vanilla for that deep aromatic background note that rounds everything together
  • 1 tbsp lemon juice: Brightens the filling and helps the strawberries maintain their vibrant red color
  • Pinch of salt: A tiny pinch makes all the fruit flavors sing rather than falling flat
  • 3/4 cup all-purpose flour: Forms the structure of your crumble and absorbs some butter for that perfect texture
  • 3/4 cup old-fashioned rolled oats: Do not use instant oats here, they will turn mushy instead of staying delightfully chewy
  • 1/2 cup light brown sugar, packed: The molasses in brown sugar creates deeper caramel notes and helps the topping crisp beautifully
  • 1/2 tsp ground cinnamon: Warm spice that bridges the gap between tart fruit and buttery topping
  • 1/4 tsp salt: Balances sweetness and highlights all the other flavors
  • 1/2 cup unsalted butter, cold and cubed: Cold butter is non-negotiable for creating those distinct crispy crumble bits we all love

Instructions

Get your oven ready:
Preheat to 350°F and grease a 2-quart baking dish with butter, getting into all the corners
Prepare the fruit filling:
In a large bowl, gently toss strawberries, rhubarb, sugar, cornstarch, vanilla, lemon juice, and salt until everything is evenly coated
Transfer to baking dish:
Spread the fruit mixture into your prepared dish, arranging pieces so they lie relatively flat
Make the oat crumble:
Mix flour, oats, brown sugar, cinnamon, and salt in another bowl, then work in cold butter with your fingers until coarse crumbs form
Top and bake:
Sprinkle crumble evenly over fruit and bake 40 minutes until golden and bubbling around the edges
Let it rest:
Cool at least 15 minutes before serving, giving the fruit time to set slightly
The baked Strawberry Rhubarb Crisp reveals bubbling red fruit filling beneath a crunchy, buttery oat crumble topping. Pin it
The baked Strawberry Rhubarb Crisp reveals bubbling red fruit filling beneath a crunchy, buttery oat crumble topping. | jasminerecipes.com

My partner's grandmother once said that a crisp without ice cream is like a hug without arms, and honestly, she was not wrong. That cold vanilla cream melting into warm fruit and crisp topping creates something absolutely magical.

The Fruit Filling Secrets

Frozen fruit works perfectly here, so do not let seasonal availability stop you from making this dessert. The only difference is frozen fruit might need an extra 5 to 10 minutes in the oven to reach that perfect bubbly state.

Building Better Crumble

Work the butter into the dry ingredients quickly so it stays cold, and do not worry if some pieces remain pea-sized. Those larger butter pockets are exactly what creates those irresistible crunchy clusters that everyone fights over.

Serving and Storage

This crisp is at its absolute best within a few hours of baking, though leftovers gently reheated will still bring plenty of joy to the table.

  • Leftovers keep covered at room temperature for one day or refrigerated for three days
  • Reheat individual portions in the microwave for about 30 seconds
  • The topping will soften slightly but still retain wonderful flavor
A rustic dish of Strawberry Rhubarb Crisp beside a scoop of melting vanilla ice cream, ready to serve. Pin it
A rustic dish of Strawberry Rhubarb Crisp beside a scoop of melting vanilla ice cream, ready to serve. | jasminerecipes.com

Whether for a Tuesday night treat or a special occasion, this strawberry rhubarb crisp has a way of making ordinary moments feel like something worth celebrating.

Recipe FAQs

Yes, frozen strawberries and rhubarb can be used directly without thawing, which retains their flavor and texture.

Mix flour, oats, brown sugar, cinnamon, and salt. Cut in cold butter until coarse crumbs form for a crisp, golden finish when baked.

Serve warm, optionally with a scoop of vanilla ice cream to complement the tart fruit and crunchy topping.

Yes, adding chopped pecans or walnuts enhances texture and adds a pleasant crunch to the crumble layer.

Yes, use certified gluten-free oats and a gluten-free flour blend to make the topping suitable for gluten-sensitive diets.

Strawberry Rhubarb Crisp Oat

A tangy-sweet blend of strawberries and rhubarb topped with golden oat crumble, served warm.

Prep 20m
Cook 40m
Total 60m
Servings 6
Difficulty Easy

Ingredients

Fruit Filling

  • 3 cups fresh strawberries, hulled and quartered
  • 3 cups fresh rhubarb, sliced 1/2-inch thick
  • 2/3 cup granulated sugar
  • 2 tbsp cornstarch
  • 1 tsp vanilla extract
  • 1 tbsp lemon juice
  • Pinch of salt

Oat Crumble Topping

  • 3/4 cup all-purpose flour
  • 3/4 cup old-fashioned rolled oats
  • 1/2 cup light brown sugar, packed
  • 1/2 tsp ground cinnamon
  • 1/4 tsp salt
  • 1/2 cup unsalted butter, cold and cubed

Instructions

1
Preheat and Prepare: Preheat oven to 350°F. Grease a 2-quart baking dish or 8-inch square pan with butter or cooking spray.
2
Prepare Fruit Filling: In a large bowl, combine strawberries, rhubarb, granulated sugar, cornstarch, vanilla extract, lemon juice, and a pinch of salt. Toss gently until fruit is evenly coated.
3
Assemble Filling: Transfer the fruit mixture to the prepared baking dish, spreading into an even layer.
4
Make Crumble Topping: In a separate bowl, whisk together flour, oats, brown sugar, cinnamon, and salt. Add cold butter cubes and cut in using a pastry cutter or rub in with fingertips until mixture resembles coarse crumbs with some pea-sized pieces remaining.
5
Add Topping: Sprinkle the oat crumble evenly over the fruit filling, covering completely.
6
Bake: Bake for 40 minutes until topping is golden brown and fruit filling is bubbling around the edges. If topping browns too quickly, tent loosely with foil.
7
Cool and Serve: Let cool for at least 15 minutes to allow filling to set. Serve warm, optionally topped with vanilla ice cream.
Additional Information

Equipment Needed

  • Mixing bowls
  • Pastry cutter or fork
  • 2-quart or 8-inch square baking dish
  • Measuring cups and spoons
  • Knife and cutting board

Nutrition (Per Serving)

Calories 325
Protein 3g
Carbs 54g
Fat 11g

Allergy Information

  • Contains gluten (wheat flour, oats) and dairy (butter). Use certified gluten-free ingredients for gluten-free version and plant-based butter substitute for dairy-free option.
Jasmine Carter

Easy, nourishing recipes and kitchen wisdom for everyday cooks and food lovers.