In a small size bowl put the melted margarine and all the rest of the crumb ingredients except for the sliced strawberries and set aside till ready to use.

In a large mixing bowl put all the dry ingredients and mix together.

Make a well in the middle of it all and put all the wet ingredients except for the fresh strawberry pieces and strawberry jam.

Mix together until blended and carefully fold in the strawberry pieces.

Pour the mixture into a 9 by 13 by 2-inch pan that has been sprayed with vegetable spray.

Gently spread batter to cover pan.

Divide the jam into thirds placing it some on both ends and in the middle of cake.

Carefully spread the jam around on top of batter.

Sprinkle the crumb topping on top and place the sliced strawberries on top of crumbs.

Bake at 350 degrees for 40-45 minutes or until a toothpick inserted in middle of cake comes out clean.

If desired drizzle with a glaze. Serve hot or cold.