Line an 11x7 or 9x9 baking dish with parchment paper and set aside. If you spray some cooking oil spray (I like avocado oil) on the pan, it will help the parchment paper stay in place.
Preheat oven to 350 degrees.
Mix the crust ingredients until well combined. Pat into bottom of prepared baking dish. It doesn't have to be perfect, but try to get it fairly even.
Bake for 15 minutes or until just starting to brown.
While the crust is baking, place the jam in a bowl and microwave for a few seconds to loosen it up, which will make it easier to spread without disturbing the crust.
Also, make the topping while the crust is baking: mix all the topping ingredients until you have a thick crumb mixture.
When the 15 minutes is up, remove the crust from the oven and spread the jam evenly over crust.
Sprinkle the topping on evenly and gently press down just a little bit.
Return pan to the oven and bake 20 more minutes.
Remove from the oven and cool completely.
Drizzle with glaze if desired. Cut into fairly small pieces (these are rich so you just need a small piece) and store in a sealed container in the refrigerator.