Crumb Topping Using your hands, mix equal parts brown sugar and flour with half as much unsalted butter (e.g. 1/2 C brown sugar, 1/2 C flour, 1/4 C butter). It should stick together and form crumbs. Spread the mixture onto a baking sheet lined with parchment paper. Bake at 350 F for 20 minutes. Crumble any pieces that stuck together and put the crumbs on everything in sight!
These Blueberry Crumble Bars from Jamie at Love Bakes Good Cakes are filled with blueberries and comes out of the oven warm and delicious. They are buttery and have an amazing crumble topping that you are really going to love.
Peanut Butter and Jelly Crumble Bars - Soft and chewy PEANUT BUTTERY bars topped with strawberry jelly and a crispy oatmeal crumble topping!! Easy, no-mixer recipe that'll be your new FAVORITE way to eat PB&J!!