👩🍳 Welcome to Chef Elena Rossi’s Kitchen — Tested Weeknight Dinners, One-Pot Pastas & Homemade Baking
Desserts & Baking

Raspberry Oatmeal Crumble Bars

★★★★★ 4.9 (88 Kitchen Reviews)
Prep Time15 mins
Cook Time35 mins
Total Time50 mins
Servings16 bars
CourseDessert
Calories280 kcal
Cook Along With All 4 Visual Step-by-Step Pages & Full Recipe Card Swipe through our 4-page kitchen guide for ingredient swaps & process photos, or tap Jump to Recipe above!
Ingredient Swaps (Page 2) →

If you hopped over from our @recipestokitchen Pinterest community, welcome to my kitchen! Today I’m sharing my tested, no-fail recipe for Raspberry Oatmeal Crumble Bars—complete with ingredient swaps, visual step-by-step cues across 4 pages, and a printable recipe card below.

Raspberry Oatmeal Crumble Bars — Tested Recipe by Chef Elena Rossi
Featured Dish: Raspberry Oatmeal Crumble Bars · Tested by Chef Elena Rossi (@recipestokitchen)
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1. Why This Recipe Works Every Time

In my test kitchen, I’ve made countless fruit bars, but these Raspberry Oatmeal Crumble Bars are the ones my family begs for again and again. The magic is in that buttery oat crust—it’s sturdy enough to hold the jammy raspberry filling, yet crumbly enough to give you that delightful sandy texture on top.

What makes this recipe foolproof is how forgiving it is. You can use fresh or frozen raspberries, and the simple technique of pressing the crust and scattering the topping means no rolling, no fuss. It’s a rustic, honest dessert that tastes like something from a cozy farmhouse kitchen.

👩🍳 Chef Elena’s Test Kitchen Highlights (Page 1 of 4)

  • Foolproof Ratios: Triple-tested with everyday supermarket ingredients so it works on your very first try.
  • Balanced Flavor: Layered aromatics and proper pan temperature create rich, homemade depth without complicated steps.
  • Save for Later: Tap 📌 Pin Recipe to save this dish to your dinner or baking board.

Tap Next Page (Page 2) below for my Key Ingredients & Easy Substitutions, or scroll down to check off the full Recipe Card!

Raspberry Oatmeal Crumble Bars

👩🍳 RECIPESTO KITCHEN · OFFICIAL TESTED RECIPE CARD

Raspberry Oatmeal Crumble Bars

These Raspberry Oatmeal Crumble Bars balance a buttery, golden oat crust with a sweet-tart raspberry filling and a crunchy streusel topping. They're the kind of treat that disappears fast—perfect for bake sales, brunches, or a cozy weekend dessert.

📌 Pin Recipe to Board★★★★★ 4.9 from Kitchen Testers
Prep Time15 mins
Cook Time35 mins
Total Time50 mins
Servings16 bars
CourseDessert
Calories280 kcal

🛒 Ingredients (Check Off As You Measure)

🍳 Step-by-Step Instructions

  1. Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving some overhang for easy lifting.
  2. In a large bowl, whisk together the flour, oats, brown sugar, baking soda, and salt. Pour in the melted butter and stir until the mixture forms a crumbly dough.
  3. Press about two-thirds of the oat mixture firmly into the bottom of the prepared pan. Set the remaining one-third aside for the topping.
  4. In a separate bowl, gently toss the raspberries with the granulated sugar, cornstarch, and lemon juice. Spread the raspberry mixture evenly over the crust.
  5. Sprinkle the reserved oat mixture over the raspberries. Bake for 30–35 minutes, until the topping is golden brown and the fruit is bubbly. Let cool completely in the pan before slicing into bars.

👩🍳 Chef Elena’s Kitchen Notes & Storage

For cleaner slices, chill the cooled bars in the fridge for 30 minutes before cutting—this really helps the layers hold together. Store them in an airtight container in the fridge for up to 5 days, or freeze for up to 3 months (just thaw in the fridge before serving).

Pinterest Kitchen Tip: Save this recipe to your @recipestokitchen board so you can pull up the ingredient checklist at the grocery store!

Estimated Nutrition (Per Serving):

Calories: 280 kcalProtein: 4gCarbs: 42gFat: 11gFiber: 3g

Chef Elena Rossi
Recipe Developed & Tested By

Chef Elena Rossi

Ciao, I'm Elena! Trained in Florence and based in Chicago, I founded RecipesTo Kitchen (and our @recipestokitchen Pinterest community of 296,580+ monthly home cooks) to share foolproof weeknight dinners, cozy one-pot pastas, and bakery-style desserts that work on the very first try.