I got this recipe from my mother in law, It has since been our families favorite cake. I have to make it for every birthday party and Pot luck that we go to. It is very moist and soooooo good.
all purpose flour
mayonnaise, not salad dressing
butter or 1/2 c. butter 1/2 c. shortning
CHOCOLATE MAYONNAISE CAKE WITH FLOUR FROSTING
1Dump first 7 ingredients into large bowl, beat on high for 3 minutes or until well blended, do not omit mayonnaise and do not substitute salad dressing Pour into greased and floured 9x12 cake pan and bake at 350 for 30-45 minutes or until toothpick comes out clean. Let cool
2While cake is baking , mix the 5 tbs. flour and milk into a pan and stir constantly on med, high until mixture thickens almost into a ball. Take off stove put into large bowl and cover and refrigerate until cold
3After cake and flour mixture are cool, mix the butter, and or shortning and sugar and vanilla into misture and beat on high with mixture until frosting doesn't taste grainy from sugar. You can also add a little cocoa if you would like chocolate, We like it without and it tastes almost like whipped cream , spread onto cake Hope you enjoy., It is not a real sweet frosting. I usually make a double batch of frosting because my kids like it that way.