Prepare full sheet tray by applying pan spay to the bottomand sides. Cover bottom of tray with a piece of parchment paper and spray againwith pan spray.
Combine all the ingredients for the base and streuseltopping in an all-purpose mixer fitted with a paddle attachment. Mix on speed#1 until mixture resembles a coarse crumb. Press 2000 grams (70.55 oz, 4.4lbs.) into the prepared sheet tray. Combine jam and preserves and spread evenlyover the base. Top mixture with fresh raspberries, sliced almonds and remainingstreusel topping – leaving the topping crumbled.
Bake in a convection oven at 325F (or conventional oven at 350C)for 30-45 minutes or until golden brown and filling is bubbling slightly.
Once cooled, cut bars into 2”x4” pieces, or desired size.