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  • Yield: Makes one 9-by-13-inch Blondie

Source: Martha Stewart Kids, Spring 2006


  • 13 tablespoons unsalted butter, softened, plus more for pan
  • 2 1/2 cups all-purpose flour
  • 1 1/2 teaspoons baking powder
  • 3/4 teaspoon salt
  • 1 1/2 cups packed light-brown sugar
  • 3 large eggs
  • 1 1/2 teaspoons pure vanilla extract


  1. Preheat oven to 350 degrees. Butter 9-by-13-inch cake pan; line with parchment paper, allowing 2-inch overhang. Butter parchment. Whisk flour, baking powder, and salt in a medium bowl. Put butter and brown sugar into mixer bowl; mix on medium-high until pale and fluffy. Mix in eggs and vanilla. Reduce speed to low. Add flour mixture; mix until just combined.

  2. Spread batter into prepared dish; smooth top. Bake until a cake tester inserted into center comes out with only a few moist crumbs attached, 25 to 30 minutes. Let cool in dish 40 minutes. Lift out, and let cool completely on wire rack.

Reviews Add a comment

  • kristen elaine0126
    4 MAR, 2015
    This recipe sucked. It should be 1 1/2 cups flour. I was furious that it came out like cake, rather than a blondie- which SHOULD have had the dense chewy consistency of a brownie. This was severely disappointing, and I'm sad I wasted ingredients on, what's basically, vanilla sheet cake. Most disappointing because, usually Martha Stewart provides excellent recipes. Was this a write up error?
  • IslandDawn13
    30 JUL, 2012
    This is a really cute idea, looks very tasty. Makes me wish I was not on a weight loss diet!
  • lemonyemilyo
    28 FEB, 2010
    Here's a link to the explanation of how this blondie turns "dog cake."
  • Lynn23
    31 JAN, 2009
    I thought this recipe was awful-- way too much flour which made them too dry and not chewy at all. I think they would taste better with dark brown sugar instead of light. I won't make these again!
  • kathleenMichael
    22 JAN, 2009
    I am intrigued by the picture too, I wonder if they made a pan of regular blondies, and also a pan of regular brownies, they they cut out the figure with a large cookie cutter in the shape of the dog, if they then carefully lifted and swapped the cut outs I think it would look like this. Thats my guess!! The dog bones could be cut out as well from another pan with cookie cutters.
  • Justine2008
    1 NOV, 2008
    Is it Blondie on top of Brownie?
  • NancyHill
    21 SEP, 2008
    super cool idea, but the recipe has no relationship to the photo. Come on tell us how you did that and what all the different layers are!
  • Emmalee
    28 JUL, 2008
    How do you create the different colored layers, the dog outline on top and the dog biscuits?
  • DeeceKS
    29 APR, 2008
    These are so easy to make and really great. Chocolate chips would be too much. They're perfect as they are.
  • DeeceKS
    29 APR, 2008
    These are so easy to make and really great. Chocolate chips would be too much. They're perfect as they are.