2 (1 ounce) squares unsweetened chocolate, chopped
4 eggs
1/2 cup milk
1/2 teaspoon lemon juice
1/2 teaspoon ground cinnamon
Preheat oven to 350 degrees F (175 degrees C).
In a medium bowl, combine chopped chocolate with eggs, milk, lemon juice, cinnamon and 1 tablespoon spice powder; mix until all ingredients are well blended. Press into a 9x13 inch baking dish.
Bake 15 minutes in the preheated oven, or until set. Cool 5 minutes before cutting into squares.