Heat oven to 375° F. Lightly coat a 9-inch round cake pan with vegetable cooking spray.
Finely chop the almonds. Grate 1 teaspoon orange zest from one of the oranges and cut strips of zest from another to use for garnish. Squeeze 1 1/2 cups juice from the oranges.
Prepare the muffin mix according to the label directions but substitute 3/4 cup of the orange juice for water and blend in the chopped almonds and grated zest.
Pour into pan. Bake 25 minutes or until a toothpick inserted in the center comes out clean. Cool torte in pan on a wire rack for 10 minutes. Remove from pan.
Meanwhile, in a small saucepan, combine the sugar and the remaining 3/4 cup orange juice. Simmer, stirring occasionally, until slightly reduced and thickened, about 10 minutes.
To serve, spoon the sauce over the torte and garnish with the orange-zest strips. If you made it from scratch: 2 1/2 hours.