My mom's chocolate Texas sheet cake is probably the classic chocolate sheet cake recipe you grew up with, but in case you lost it, here it is along with a cooked chocolate frosting!
Ingredients
Chocolate Cake
2CupsFlour
2CupsSugar
1/2CupMargarine
1/2CupShortening
4Tablespoonsof Cocoa
1CupWater
1/2Cupof ButtermilkOr 1/2 Cup of milk and 1 tablespoon of vinegar