These Raspberry Bars with Oatmeal Crumble Topping are the ultimate summer dessert. Sweet, tart raspberry jam layered between buttery brown butter oat shortbread and a golden, crumbly topping. Easy to make and perfect for picnics, potlucks, or afternoon coffee breaks. You can also swap the raspberries for blueberries, blackberries, strawberries, peaches, or even apples for a seasonal twist everyone will love.
