01 -
Preheat oven to 350°F (175°C).
02 -
Using an electric mixer on low speed, combine butter, flour, sugar, and egg until the mixture is crumbly. Reserve 1 1/2 cups of the mixture for the topping.
03 -
Press the remaining mixture into a prepared 13 x 9-inch (33 x 23 cm) baking dish to form a crust.
04 -
Spread the entire jar of seedless raspberry jam evenly over the crust.
05 -
Crumble the reserved topping over the jam layer and press lightly to adhere.
06 -
Bake in the preheated oven for 30-40 minutes, or until the topping is golden brown.
07 -
Allow the bars to cool completely before cutting. Enjoy!