Cooking with Toti
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Blueberry Crumble Bars
Thick, bakery-style bars with homemade blueberry jam and buttery oat crumble.
Time
1 hr
Made with homemade blueberry jam, coconut sugar, and a buttery oat crumble. Thick, crumbly, and packed with blueberry flavor — even better the next day.
Instructions
Blueberry Jam
- 1
Add blueberries, sugar, and lemon juice to a saucepan.
- 2
Cook over medium heat until berries soften and release juices.
- 3
Stir in cornstarch and cook, stirring frequently, until thick and jam-like.
- 4
Remove from heat and cool slightly.
Crumble
- 1
In a large bowl, combine melted butter, flour, oats, granulated sugar, coconut sugar, and salt.
- 2
Mix until a crumbly mixture forms.
- 3
Measure out 1 cup of crumble and set aside for the topping.
Assemble & Bake
- 1
Preheat oven to 350°F (175°C) and line a standard loaf pan with parchment.
- 2
Press the remaining crumble firmly into the bottom of the pan to form the crust.
- 3
Spread the blueberry jam evenly over the crust.
- 4
Sprinkle the reserved 1 cup of crumble over the top.
- 5
Bake 30–35 minutes, until the topping is lightly golden and the filling is bubbling around the edges.
- 6
Cool completely before slicing.
Toti’s Tips
- ✓Frozen blueberries release more liquid — cook the jam down to a nice thick consistency.
- ✓Fresh blueberries release less liquid; add a small splash of water if the jam is too thick.
- ✓Coconut sugar adds a wonderful caramel-like flavor in place of brown sugar.
- ✓Loaf pan = thick bakery-style bars; 8-inch square pan = thinner bars.
- ✓Even better the next day after the flavors develop.
More photos
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