Preheat oven to 350°. Grease a 15x10x1-in. baking pan.
In a large bowl, whisk flour, sugar, baking soda and salt. In a small saucepan, combine water and butter; bring just to a boil. Stir in peanut butter and oil until blended. Stir into flour mixture. In a small bowl, whisk eggs, buttermilk and vanilla until blended; add to flour mixture, whisking constantly.
Transfer to prepared pan. Bake until a toothpick inserted in center comes out clean, 20-25 minutes.
Meanwhile, for glaze, combine sugar, milk and butter in a saucepan. Bring to a boil, stirring constantly; cook and stir 2 minutes. Remove from heat; stir in peanut butter, marshmallows and vanilla until blended. Spoon over warm cake, spreading evenly. Cool on a wire rack.
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Average Rating:
angela32
Feb 11, 2021
Delicious! I shared with friends, so we wouldn't eat it all by ourselves!
Beverly
Sep 24, 2020
Does anyone know of the changes in proportions for a sheet cake size?
dcscake_OH
Apr 28, 2020
I made this to take to work, after my surgery, and everyone loved it. Easy to make - great taste.
Judybelt
Feb 29, 2020
Moist,easy to prepare, delicious
D.
Jun 7, 2019
This sounds wonderful, with the addition of the chocolate chips scattered on top as suggested by some other reviewers. I also have to use smooth peanut butter as my family doesn't care for the chunky stuff, and also because I buy my peanut butter at a local health food store (they make it right there) and they only carry smooth. I, too, made mine into more of a "cake" than a bar by using a 9 x 13 pan and that way only one recipe of the frosting was necessary. This was delicious.
Tonya
Apr 20, 2018
Love it. Easy to make with ingredients you probably have. I did make 2 of the glaze receipts. So good!
cherylyoung
Oct 8, 2017
Got alot of compliments. Did use a 17 x 12 pan from previous posts, thinking pan wasn't big enough. Icing didn't cover the whole cake- doubled it. As long you like icing, go for it. It is a good cake to make!
NanZim
Jun 26, 2017
Moist with lots of peanut butter flavor. My husband especially likes it after a few days because the glaze infuses the cake.
redcow
Feb 12, 2017
Made this cake a couple of nights ago when I had company for supper. It was a hit and well liked. Cake is very moist. I sprinkled mini chocolate chips on top of the glaze. Another time, I will add some chocolate chips to the cake batter. My only complaint is that a 15 X 10 pan is barely big enough. Next time I will use a slightly larger pan.
Bigleybakes
Oct 28, 2015
I had the request to make this after a local bakery stopped making it for my friend. The results were fantastic!I made it several times and for me it worked to double the glaze recipe and increase the marshmallows to double- this makes the glaze thicker. To make a larger size, 1 & 1/2 the recipe to make it big enough for a "Full Sheet" pan from GFS.The cake is super moist- just be sure to mix it in the right order- this order is so important to create the lightness in the cake and don't cover it until it is fully cooled to avoid sweating.Even 3 days later the cake was still moist and well received by my guests, those who sampled the test batches and turned out better than the bakery according to my friend. I even added it to my baking line!
Reviews
Delicious! I shared with friends, so we wouldn't eat it all by ourselves!
Does anyone know of the changes in proportions for a sheet cake size?
I made this to take to work, after my surgery, and everyone loved it. Easy to make - great taste.
Moist,easy to prepare, delicious
This sounds wonderful, with the addition of the chocolate chips scattered on top as suggested by some other reviewers. I also have to use smooth peanut butter as my family doesn't care for the chunky stuff, and also because I buy my peanut butter at a local health food store (they make it right there) and they only carry smooth. I, too, made mine into more of a "cake" than a bar by using a 9 x 13 pan and that way only one recipe of the frosting was necessary. This was delicious.
Love it. Easy to make with ingredients you probably have. I did make 2 of the glaze receipts. So good!
Got alot of compliments. Did use a 17 x 12 pan from previous posts, thinking pan wasn't big enough. Icing didn't cover the whole cake- doubled it. As long you like icing, go for it. It is a good cake to make!
Moist with lots of peanut butter flavor. My husband especially likes it after a few days because the glaze infuses the cake.
Made this cake a couple of nights ago when I had company for supper. It was a hit and well liked. Cake is very moist. I sprinkled mini chocolate chips on top of the glaze. Another time, I will add some chocolate chips to the cake batter. My only complaint is that a 15 X 10 pan is barely big enough. Next time I will use a slightly larger pan.
I had the request to make this after a local bakery stopped making it for my friend. The results were fantastic!I made it several times and for me it worked to double the glaze recipe and increase the marshmallows to double- this makes the glaze thicker. To make a larger size, 1 & 1/2 the recipe to make it big enough for a "Full Sheet" pan from GFS.The cake is super moist- just be sure to mix it in the right order- this order is so important to create the lightness in the cake and don't cover it until it is fully cooled to avoid sweating.Even 3 days later the cake was still moist and well received by my guests, those who sampled the test batches and turned out better than the bakery according to my friend. I even added it to my baking line!