Combine the melted butter, sugar, salt, and almond extract.
Add flour and combine until the dough comes together.
Set aside approximately 2 cups of the dough (you can eyeball this).
Press the remaining dough into a well-greased 13 x 9-inch pan.
Warm preserves in the microwave for about 1 minute.
Spread preserves on top of the crust layer.
Take the 2 cups of dough you set aside and cut in the almond paste until mixed.
Break the dough into large crumbles.
Sprinkle the crumbles on top of the preserves and press down lightly.
Bake at 325 degrees until bars are lightly browned around edges and the top begins to brown (usually about 45 minutes).
Let cool.
Before the bars are set, loosen the edges with a knife. These are easiest to cut and remove when cooled completely.
Can be made ahead of time and stored in the freezer.