Easy Skillet Rhubarb Crisp

When rhubarb season rolls around, this easy skillet rhubarb crisp is one of the best ways to turn those tart stalks into something warm, sweet, and irresistible. Whether you call it a rhubarb crisp, rhubarb crumble, or oat streusel bake, it’s the kind of dessert that begs for a scoop of vanilla ice cream on top.

• If you love warm fruit desserts, my Easy Apple Crisp Without Oats is a great twist on the classic with a smooth, crumbly topping instead of oats.

Ingredients for the Best Rhubarb Crisp

• Fresh rhubarb – 6 cups, chopped into ¼-inch pieces. Frozen works if thawed and drained.
• Granulated sugar – Balances out the tartness.
• Cornstarch – Thickens the juices so your filling isn’t runny.
• Old-fashioned oats (rolled oats) – Give the topping its signature crisp texture.
• Brown sugar – Adds caramel-like sweetness to the crumble.
• All-purpose flour – Holds the streusel together.
• Butter – Softened and cubed for blending into the topping.

How to Make Rhubarb Crisp in a Cast Iron Skillet

Prep your skillet: Preheat the oven to 375°F and lightly grease a 10-inch ovenproof skillet.

Make the filling: Toss rhubarb, sugar, and cornstarch in a mixing bowl until evenly coated. Spread into the skillet.

Mix the topping: In the same bowl, stir together oats, brown sugar, and flour. Cut in the butter with a pastry blender or your fingertips until crumbly.

Assemble & bake: Sprinkle the oat crumble/streusel over the rhubarb. Bake 35–40 minutes until the topping is golden brown and the edges are bubbling.

Cool & serve: Let stand for 10 minutes before serving. Best enjoyed warm with ice cream.

What’s the Difference Between a Crisp, Crumble, and Streusel?

• Crisp – An American term for a baked fruit dessert with an oat topping that gets crunchy in the oven.
• Crumble – Often used in the UK, and sometimes oat-free.
• Streusel – A German term for a crumbly topping made from butter, flour, and sugar; in this recipe, the oats make it a streusel-style crisp.

Prefer a biscuit-style topping? My Blackberry Cobbler and Cherry Cobbler are both easy fruit-filled desserts that work with fresh or frozen fruit.

Variations to Try with This Rhubarb Crisp

• Swap half the rhubarb for strawberries for a strawberry rhubarb crisp.
• Add a pinch of cinnamon or nutmeg to the topping for a spiced rhubarb crumble.
• Replace oats with almond flour for a nutty streusel topping.
• Bake in individual ramekins for single-serve rhubarb crisps.

What to Serve with Rhubarb Crisp

Serve warm with vanilla ice cream, whipped cream, or even a drizzle of caramel sauce. This skillet dessert also makes a great addition to Easter, Mother’s Day, or any spring gathering.

Looking for something rich and indulgent to add to the dessert table? My Banana Bars with Cream Cheese Frosting and (despite the crass name) Slutty Cheesecake Bars are always a hit.