Start your day on a sweet and wholesome note with these irresistible Blackberry Breakfast Bars! Bursting with the juicy flavor of fresh blackberries and a zesty hint of lemon, these bars are layered between a golden, buttery oat crust and crumbly topping made with brown sugar. Perfect as a grab-and-go breakfast or mid-morning snack, this recipe comes together in under an hour using simple pantry staples like rolled oats and all-purpose flour. The combination of tart blackberries and a lightly sweet crumble makes these bars both refreshing and satisfying. Whether you’re prepping them for the week or serving them warm from the oven, these blackberry bars are sure to become a go-to favorite for busy mornings or casual brunches.
Preheat your oven to 350°F (175°C). Line an 8x8-inch baking dish with parchment paper, leaving some overhang for easy removal later.
In a large mixing bowl, combine the flour, old-fashioned oats, brown sugar, and salt. Mix until evenly distributed.
Pour the melted butter over the dry ingredients. Stir until the mixture is crumbly and can clump together when pressed.
Press two-thirds of the oat mixture firmly into the prepared baking dish to form an even crust. Reserve the remaining third of the mixture for the topping.
In a medium-sized bowl, toss the blackberries with granulated sugar, cornstarch, and lemon juice until the berries are evenly coated.
Spread the blackberry mixture evenly over the crust in the baking dish.
Sprinkle the reserved oat topping over the blackberries, pressing down gently to adhere it to the filling.
Bake in the preheated oven for 35–40 minutes, or until the top is golden brown and the blackberry filling is bubbling around the edges.
Allow the bars to cool completely in the baking dish before lifting them out using the parchment overhang. Slice into 9 squares and serve.
Store leftovers in an airtight container in the refrigerator for up to 5 days.
Serving size | 753.3 grams (753.3g) |
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Amount per serving | % Daily Value* |
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Calories | 2210 |
Total Fat 104.70g | 134% |
Saturated Fat 61.90g | 310% |
Polyunsaturated Fat 0.00g | |
Cholesterol 258mg | 86% |
Sodium 624mg | 27% |
Total Carbohydrate 302.70g | 110% |
Dietary Fiber 26.60g | 95% |
Total Sugars 137.20g | |
Protein 27.50g | 55% |
Vitamin D 0IU | 0% |
Calcium 226mg | 17% |
Iron 11mg | 61% |
Potassium 1032mg | 22% |
Source of Calories