Brown Sugar Cinnamon Crumble Bars – Easy Cookie Bar Recipe

Hi there, food lover! 👋

If you adore cozy, nostalgic desserts that taste like they came straight from grandma’s kitchen, you’re going to fall head-over-spatula for these Brown Sugar Cinnamon Crumble Bars. 🍂✨

These bars are everything we love about old-fashioned crumble desserts—soft, buttery layers, warm cinnamon, deep caramel notes from brown sugar, and a golden, crumbly topping that melts in your mouth. They strike that perfect balance between cookie and crumble, making them ideal for snack time, potlucks, holiday trays, or a simple moment of self-care with a cup of coffee or tea.

Traditionally, crumble-style cookie bars rely on pantry staples, humble ingredients, and minimal fuss—perfect for bakers who appreciate timeless flavors and reliable comfort. In this recipe, we honor that classic approach while keeping things simple, sweet, and universally irresistible. The aroma alone—brown sugar and cinnamon slowly baking together—feels like a warm hug from the oven.

Let’s get your kitchen smelling amazing! 😋🍪✨

Ingredients

Crumble Dough (Base + Topping)

• 2 cups all-purpose flour
• 1 cup rolled oats
• 1 cup brown sugar (light or dark)
• 1 tsp cinnamon
• 1/2 tsp baking soda
• 1/4 tsp salt
• 1 cup unsalted butter, melted

Filling

• 1/2 cup brown sugar
• 2 tbsp all-purpose flour
• 1 tbsp cinnamon
• 1/4 cup melted butter
• 1 tsp vanilla extract

Step-by-Step Directions

1. Preheat & prep.
   Heat oven to 350°F (175°C). Line an 8×8 or 9×9 pan with parchment paper.
2. Make the crumble mixture.
   Combine flour, oats, brown sugar, cinnamon, baking soda, and salt. Stir in melted butter until the mixture resembles damp sand.
3. Press the base.
   Pour 2/3 of the crumble mixture into the pan and press firmly to form the bottom layer.
4. Mix the filling.
   Stir together brown sugar, flour, cinnamon, melted butter, and vanilla until smooth and spreadable.
5. Spread filling.
   Evenly layer the cinnamon-sugar filling across the pressed base.
6. Top with crumble.
   Sprinkle the remaining crumble mixture over the filling to create a golden, textured top.
7. Bake.
   Bake 25–30 minutes or until the top is lightly golden and edges are set.
8. Cool & cut.
   Let cool completely before slicing into bars for clean edges and perfect squares.

Nutritional Information

⏰ Prep Time: 10 minutes | 🔥 Baking Time: 30 minutes
⏳ Total Time: 40 minutes
⚡ Calories per serving: ~290 | 🍽️ Servings: 12–16 bars

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Bon appétit and happy cooking! 👩🍳🍽️