These blackberry bars are a delightful blend of sweet and tangy flavors, perfectly balanced with a hint of fresh rosemary and zesty lemon. They make a refreshing treat that's easy to share with friends and family.
Start by heating your oven to 350°F (175°C) and lining an 8-inch baking dish with parchment paper, letting the edges hang over two sides for easy removal later. In a small bowl, mix together the flour, oats, butter, brown sugar, vanilla, and salt with a fork until it looks crumbly—pop this in the fridge to chill while you work on the rest.
Next, cream the butter and powdered sugar with a mixer until it’s light and fluffy. Beat in the eggs one at a time, plus the extra yolk, making sure everything is well combined. Stir in the lemon zest, rosemary, and vanilla extract for a fresh, fragrant touch.
In another bowl, whisk the flour, baking powder, and salt. Gradually add this to your butter mixture, mixing well after each addition until you get a thick dough. Press the dough evenly into the bottom of your prepared pan.
Scatter the blackberries all over the dough, then take the crumbly topping from the fridge, give it a quick stir, and sprinkle it evenly on top. Press down gently to help it stick together a bit.
Pop the pan in the oven and bake for about 40 to 45 minutes, or until a toothpick poked into the center comes out clean. Once it’s done, let it cool on a wire rack for at least an hour.
Finally, use the parchment paper edges to lift the bars out of the pan. Slice them into 12 squares with a serrated knife, and enjoy!
- Use fresh blackberries for the best flavor and texture. Frozen berries can make the crust soggy.
- Lightly press the dough into the pan to create an even base that bakes uniformly.
- Chill the dough before baking to help it hold its shape and prevent spreading.
These bars offer a perfect balance of sweet and tart flavors with a hint of fresh rosemary and bright lemon. The combination creates a unique and refreshing treat that feels both comforting and sophisticated. They are easy to make and great for any occasion.
Serve these bars slightly warm or at room temperature. They pair wonderfully with a dollop of whipped cream or a scoop of vanilla ice cream. A drizzle of honey or a sprinkle of powdered sugar can add an extra touch of sweetness.
Store the bars in an airtight container at room temperature for up to three days. For longer freshness, keep them in the refrigerator for up to one week. You can also freeze the bars wrapped tightly in plastic wrap for up to three months. Thaw before serving.
