This little rhubarb crunch is the kind of recipe you’d find on a handwritten card tucked in an old Midwestern church cookbook. It’s just four ingredients and relies on a box of white cake mix, a bit of sugar, and melted butter sprinkled right over fresh diced rhubarb. No fussing with mixing bowls or fancy equipment—just layer, sprinkle, and bake. The result is a cozy Amish-style dessert with a tender, tangy fruit base and a buttery, crisp topping that tastes like something Grandma might have pulled from the oven on a cool spring evening.
Serve this rhubarb crunch warm, scooped into bowls with a big spoonful of vanilla ice cream or a dollop of lightly sweetened whipped cream. It’s also lovely just as it is, enjoyed with a cup of coffee or hot tea. For a brunch table, pair it with scrambled eggs and sausage for a sweet-tart contrast. If you have leftovers, it’s perfectly acceptable in my book to enjoy a small square cold from the fridge with a splash of cream over the top.
ngredients
- 6 cups fresh rhubarb, diced
- 1/3 cup zero-calorie sweetener (like monk fruit or erythritol)
- 1 box sugar-free yellow or white cake mix
- 1/4 cup light butter, melted
- Optional: cinnamon or vanilla for extra flavor
Instructions
- Preheat oven to 350°F (175°C).
- Spray a 9×13-inch baking dish with nonstick spray.
- Spread the rhubarb evenly in the dish.
- Sprinkle sweetener over the rhubarb.
- Evenly sprinkle the dry cake mix on top.
- Drizzle melted light butter over everything.
- Bake for 40–45 minutes until golden and bubbly.
WeightWatchers Points
- If cut into 12 servings:
- ≈ 3 points per serving
Variations & Tips
For a slightly less tart dessert, you can increase the sugar over the rhubarb to 1 1/4 cups, especially if your rhubarb is very sour or early in the season. If you like a bit of spice, sprinkle 1 teaspoon of ground cinnamon over the sugar before adding the cake mix. A handful (1/2 to 3/4 cup) of chopped walnuts or pecans scattered over the top before baking adds a nice crunch and a nod to old farmhouse baking.
You can also replace 1 cup of the rhubarb with sliced strawberries for a classic spring pairing. If using salted butter, simply omit any extra salt; the recipe as written needs no added salt. For a smaller household, halve the recipe and bake it in an 8×8-inch dish, checking for doneness about 5–10 minutes earlier.
Food safety tips: Rhubarb leaves are toxic and should never be eaten—only use the stalks, and discard all leaves promptly. Wash the stalks under cool running water and trim any damaged spots before dicing. Make sure the dessert is baked until the center is hot and bubbling so the rhubarb softens fully. Cool leftovers, cover tightly, and refrigerate within 2 hours; enjoy within 3–4 days, reheating individual portions gently in the microwave or oven if you like it warm.