Preheat the oven to 350 °F. Lightly spray an 8x8-inch baking dish with nonstick spray.
Take 12 sheets of phyllo pastry and cut them in half. You'll end up with 24 smaller sheets.
Lay 2 sheets of phyllo pastry in the bottom of the baking dish. Spritz lightly with butter-flavored nonstick spray.
Repeat. Lay 2 more sheets of phyllo pastry in the bottom of the baking dish. Spritz again with butter-flavored nonstick spray.
Repeat. Lay 2 more sheets of phyllo pastry in the baking dish. (Your pastry should now be 6 sheets deep.)
Sprinkle ⅓ of the nut mixture on top of the phyllo pastry.
Drizzle 2 teaspoons of margarine on top of the nut mixture (as evenly as you can get it; it won't be exactly even.)
Lay 2 more sheets of phyllo pastry on top of the nut mixture, and lightly spritz it with butter-flavored nonstick spray.
Repeat twice more. Again, you want your next layer of pastry to be 6 sheets deep.
Sprinkle the second third of the nut mixture on top, and drizzle with 2 more teaspoons of margarine.
Stack another 6 phyllo sheets, lightly spraying every other layer with nonstick spray. Sprinkle the remaining ⅓ of the nuts, and drizzle with margarine,
Lightly spray and stack the remaining 6 phyllo sheets.
Use a sharp knife to slice the pastry into 16 squares.
Place in the oven and bake for about 40 to 50 minutes, until the pastry is crisp and golden brown.