In an electric mixer, beat butter and sugar together for about 4 or 5 minutes, or until pale and fluffy.
Reduce speed to low and add almond extract, followed by flour. Mix until combined
Press dough into a 10x1 inch tart pan with a removable bottom. Cover with plastic wrap and press
down dough. Start in center of pan and pat dough out and up sides of pan. Chill dough until firm, about
30 minutes, or as long as overnight.
Preheat oven to 350 degrees.
Remove tart pan from refrigerator and
drop spoonfuls of Nutella evenly over the crust.
Bake tart for 5 minutes, remove from the oven and now
spread the softened Nutella over the crust.
Sprinkle the chocolate morsels over the Nutella.
Sprinkle with the sliced almonds.
Bake on the lower rack of the oven until the crust is golden, about 20-25 minutes. (Put tart on a cookie
sheet to bake)
Cool, remove side of tart pan and serve at room temperature or warm.