1. In a mixer cream the butter (room temperature) and add the rest of the ingredients.
Blend flour, sugar, lemon peel, baking powder, and salt in processor until combined. Add butter; using on/off turns cut in until mixture resembles coarse meal. Add 2 eggs; using on/off turns, process until moist clumps form. Gather dough into ball. Flatten into disk. Wrap in plastic and refrigerate overnight. Let soften slightly before rolling out.
Preheat oven to 375. Butter 9-inch diameter tart pan with removable bottom. Set aside 1/3 of dough. Roll out remaining dough on lightly floured surface to 14-inch round. Transfer to prepared tart pan. Trim overhang to 1 inch. Fold in dough to make double-thick sides. Freeze rest 15 minutes. Spread the almond filling in cooled tart shell.Spread the jam over the almond filling, sprinkle amaretti crumbs over jam.
Roll out reserved dough to 11x6 inch rectangle. Cut into eight 1/2-inch-wide strips. Arrange strips atop jam to form lattice. Brush lattice with beaten egg.
Bake tart until crust is golden, about 45 minutes. Cool at least 6 hours to allow jam to set. Cut into wedges and serve.