Strawberry Rhubarb Crisp Recipe with Oat Topping

A simple, flavorful strawberry and rhubarb crisp that celebrates spring and summer produce. Tart rhubarb and sweet strawberries bake into a bubbling, fragrant filling, topped with a golden oat crumble. This recipe is quicker and more forgiving than pie, making it ideal for busy weeknights, casual gatherings, or a relaxed weekend dessert.

I usually reach for rhubarb as soon as the stalks start to appear in the garden, and strawberries are a natural partner. This strawberry rhubarb crisp highlights the best of both: juicy fruit beneath a crisp, buttery topping that browns nicely in a cast-iron skillet or baking pan. The method is straightforward, and the results are reliably delicious.

How to Make This Crisp

Preheat the oven to 375°F (190°C). Choose the baking dish you prefer — a 10-inch cast-iron skillet works beautifully, but a round or square casserole pan is also fine. Preparing the fruit and topping separately makes assembly quick.

Crisp Fruit Base

Wash and trim the rhubarb and strawberries. Quarter the strawberries and slice the rhubarb into roughly 1/4-inch pieces so both cook evenly. Combine the cut fruit in your baking dish, then add the water, lemon juice, and sugar. Stir gently to combine and spread the fruit in an even layer — the lemon brightens the flavors while a little water helps the fruit release juices during baking.

Crisp Topping

In a medium bowl, whisk together the flour, brown sugar, cinnamon, and rolled oats. Cut in cold, salted butter using a fork, pastry cutter, or your fingertips until the mixture resembles coarse crumbs and holds together when pressed. Spread the crumble evenly over the fruit, covering it completely so the topping becomes crisp and golden during baking.

Bake for about 40 minutes, or until the fruit is soft and bubbling and the topping is golden and crisp. Remove from the oven and allow the crisp to rest for 10–15 minutes before serving to let the juices settle. Serve warm for the best texture and flavor.

Storage and Reheating

Store any leftovers in an airtight container in the refrigerator for up to two days. Reheat individual portions in the microwave for about one minute or until warmed through, or reheat a larger portion in a 325°F (160°C) oven for 10–15 minutes to refresh the topping. Leftover crisp makes a lovely breakfast or snack, especially when paired with yogurt or a scoop of vanilla ice cream.

This dessert is a great activity to share with family — kids can help measure, stir, and crumble the topping — and makes a casual crowd-pleaser at potlucks and backyard dinners. If you enjoy this recipe, consider trying other fruit crisps with the same crumble topping; peaches, apples, or mixed berries all work well.

If you make this crisp, feel free to note which variation you tried and how you served it. Feedback helps refine the recipe and inspires new ideas.