Tex-Mex Sheet Cake

Makes one 15 x 10-inch cake.

1 1/4 cups margarine or butter
1/2 cup unsweetened cocoa
2 tablespoons instant coffee
1 cup water
2 cups unsifted flour
1 1/2 cups firmly packed light brown sugar
1 teaspoon baking soda
1 teaspoon ground cinnamon
1/2 teaspoon salt
1 (14 ounce) can Eagle