Blueberry lovers unite – these just may be the best blueberry bars ever! Blueberry Crumble Bars with Oatmeal Crumble Topping are filled with fresh blueberries and the perfect buttery brown sugar oatmeal crumble topping.
THE FASTEST, EASIEST, FRUITIEST TREAT EVER!
I'm always looking for special things that I can make with my little ones, and these Blueberry Crumble Bars win the prize for easiest and fastest! One bowl, 10 minutes, a quick bake, and the most perfect Blueberry Crumble Bars are ready for snacking!
Bonus that this is an egg-free treat, and by substituting gluten-free flour you can make these gluten-free as well!
I prefer using fresh fruit for my crumble bars - whether its blueberries, raspberries, strawberry, rhubarb, peach or cranberry, but in a pinch (or in the middle of winter) you can also use frozen berries. Simply use them frozen (don't thaw before baking) and increase the baking time.
This is also one of the easiest recipes for little ones to learn to bake on their own, with just a tiny bit of adult supervision. Perfect for reading, measuring, following directions, and eating! I love the smiles when they create something all on their own to share - it's a great confidence-booster!
MORE OF MY FAVORITE FRUIT CRUMBLE BAR RECIPES:
CRUST & CRUMBLE TOPPING:
1/2 cup (1 stick) unsalted butter (melted)
1 cup (120g) all-purpose flour
3/4 cup old-fashioned whole oats
1/2 cup (100g) granulated sugar
1/4 cup (50g) light brown sugar, packed
½ teaspoon salt
12 ounces (2 cups) fresh blueberries
1/3 cup granulated sugar
2 teaspoons cornstarch
2 tablespoons lemon juice
HOW I MAKE THESE:
Originally posted June 2013; revised & reposted January 2021.
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