Peanut Cake Squares Recipe
Peanut Cake Squares Recipe photo by Taste of Home

Peanut Cake Squares Recipe

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When I was in high school, I worked for an Irish family...and they made these yummy treats each year for St. Patrick's Day. The sweet frosting and salty peanuts are an irresistible combination. The only complaint my husband has is that I make them just once a year! -Bridget Jones, Veyo, Utah
TOTAL TIME: Prep: 30 min. + freezing Bake: 30 min. + cooling
MAKES:24 servings
TOTAL TIME: Prep: 30 min. + freezing Bake: 30 min. + cooling
MAKES: 24 servings


  • 4 eggs
  • 1-3/4 cups sugar
  • 1 teaspoon vanilla extract
  • 1-3/4 cups all-purpose flour
  • 3 teaspoons baking powder
  • 1/2 teaspoon salt
  • 1 cup milk
  • 1/4 cup butter, melted
  • 7-1/2 cups confectioners' sugar
  • 2/3 cup milk
  • 2 teaspoons vanilla extract
  • 1/8 teaspoon salt
  • 6 cups finely chopped peanuts

Nutritional Facts

1 each: 496 calories, 21g fat (4g saturated fat), 43mg cholesterol, 298mg sodium, 68g carbohydrate (52g sugars, 3g fiber), 12g protein


  1. In a large bowl, beat the eggs, sugar and vanilla until thick and lemon-colored, about 4 minutes. Combine the flour, baking powder and salt; add to egg mixture. Beat on low speed just until combined. Beat in milk and butter.
  2. Pour into a greased 13-in. x 9-in. baking pan. Bake at 350° for 30-35 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack. Cut into squares. Cover and freeze overnight.
  3. For frosting, in a small bowl, beat the confectioners' sugar, milk, vanilla and salt until smooth. Frost the top and sides of frozen cake squares; roll in peanuts. Place on wire racks to set. Yield: 2 dozen.
Originally published as Blarney Stones in Taste of Home February/March 2002, p33

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Reviewed Mar. 16, 2015

"I had made theses several years ago for st Patricks day and they were good. I wasn't 100% thrilled with the frosting and will try the suggestions to add some softened butter. To itsnotdew. Cakes usually fall in the center due to insufficient mixing of batter. It's happened to me also. I remember one time after mixing pouring the batter in the pan and you could tell it was not fully mixed and it fell in the center. Try mixing thoroughly good luck !"

Reviewed Mar. 13, 2015

"I have made these for the last 2 years. The cakes fell in the center last year. My oven was bad, temperture all messed up, so I figured that was why. I forgot to make a note of it on the recipe. Today, I made 2 more cakes, & the center fell on both of them. And I have a brand new stove, so it can't be that. I am so surprised no one else has said theirs fell too. The cake is really good, so I gave it 3 stars, but I sure don't like flat cakes in the whole center. Not even enough cake around the edges to cut out pieces. I will still frost & nut the cake, but the pieces will only be half as high. The recipe calls for 3 teas of baking powder,could that be too much? Does anyone know why cakes fall?"

Reviewed Mar. 14, 2014

"I liked the taste a lot, but they were a little difficult to put together. I think the frosting needs to be a little thinner to adhere to the frozen cakes. Will definitely make these again, though"

Reviewed Feb. 25, 2012

"This exact recipe from the same person Bridget Jones Diary is also on, if your on two sites with great reviews then it really must be good. I'm definitely going to make these in March for my work. Thanks! =o)"

Reviewed Sep. 18, 2011

"My family just loves these, my mother in law called them blarney stones. I would definitely make again!"

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