Preheat oven to 350 degrees. Line an 8×8 pan with a parchment sling (lay an 8″ strip of parchment across bottom of pan so it hangs over each end, and then lay another the opposite direction. Alternately you could just line the pan with foil, or simply spray with non-stick spray. Lining the pan makes it easy to remove the bars and cut.)

Combine flour, white and brown sugars, oats, and salt in the bowl of a stand mixer. Cut butter into chunks and add to bowl along with beaten egg and almond extract. Turn mixer on and let mix until the mixture comes together into a cohesive dough that looks like coarse crumbs. Remove 2 cups of dough (about half) and set aside. Press remaining dough into the bottom of the prepared pan. Spread preserves on top, avoiding the very edge of dough. Take remaining dough and crumble on top of preserves in an even layer. If desired, sprinkle with turbinado sugar.

Bake for 40-50 minutes until slightly golden brown on top. Cool completely before cutting into squares.