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Desserts & Baking

Raspberry Oatmeal Crumble Bars

★★★★★ 4.9 (88 Kitchen Reviews)

3. Step-by-Step Visual Guide

In Part 3 of making Raspberry Oatmeal Crumble Bars, let’s walk through the hands-on cooking technique so your texture turns out restaurant-worthy at home.

Raspberry Oatmeal Crumble Bars — Step-by-Step Visual Guide (Page 3)
Step-by-Step Kitchen Technique: Cooking Raspberry Oatmeal Crumble Bars · @recipestokitchen
📌 Pin Recipe

Visual Cues & Timing Secrets

Start by mixing the dry ingredients with melted butter—it’ll look like wet sand, and that’s perfect. Press most of it into the pan with your fingers or the bottom of a measuring cup; this creates a solid, even base.

Then toss the berries with sugar and cornstarch (the cornstarch thickens the juices as they bake), and layer them over the crust. Sprinkle the remaining oat mixture on top, and bake until golden and bubbling. Letting it cool completely is key—warm bars will fall apart, but once set, they slice like a dream.

Head to Page 4 for my Make-Ahead, Storage & Reheating Tips plus what to serve alongside this dish!

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 8x8-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.