This cake is easy and one of my kids' favorites.
1 cup oil
2¼ cup sugar
3½ cup flour, divided
3 tsp baking powder
1 cup orange juice
1 tsp vanilla
1¾ tsp cinnamon
1¼ tsp cocoa
½ cup brown sugar
½ stick margarine
In a mixing bowl, place oil, sugar, eggs, 3 cups flour, baking powder, orange juice and vanilla. Mix cake batter with a mixer on high speed .
In a separate bowl, create a cinnamon mixture by combining cinnamon, cocoa and brown sugar.
In a 3rd bowl, make a crumb mixture by combining 1/2 cup of flour with sugar and margarine softened at room temperature. Mix by hand till it becomes crumbs.
In a 9x13"-inch pan, layer cake batter, cinnamon mixture, cake batter, cinnamon mixture and then crumb mixture on top. Bake at 350*F for about 60 minutes.