Preheat oven to 325 degrees. F (165 C) Line a 9x9 inch pan with parchment. If making half batch, use a 9x5 inch loaf pan.
Combine preserves and orange juice; Set aside.
In a small mixing bowl, crumble up almond paste and set that aside as well.
In a large mixing bowl, beat together butter, sugar and almond extract. By hand, stir in flour and salt.
Scoop out 1 cup of the flour mixture and add to the bowl with almond paste. Mix this together to form topping. Add the sliced almonds.
Press remaining flour mixture into bottom of lined pan. Spread apricot/orange mixture over top. Crumble flour/almond paste/almond mixture over filling.
Bake for about 1 hour at 325 degrees F. Cut into 32 bars