Monster Blondies

What’s an easy homemade treat to for Halloween? I highly recommend blondies, a versatile treat that you can customize however you like. These monster blondies feature both Reese’s Pieces and M&Ms (the plain variety), as well as some candy eyeballs. They’re on their way to my favorite little Marylanders, Mo and Margo. Incidentally, Margo’s birthday is on Halloween, so I guess these count as her birthday treats as well.

Candy eyeballs are available at most craft stores in the cake and candy section; I got these at Target, in their Halloween baking section, and used both plain white and creepy red. When you’re placing the eyeballs on top of your blondies, keep in mind your cut lines for when the blondies are baked; I definitely had a few half-eyeballs, but I guess that just ups the creep factor.


  • 2 1/2 cups flour
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking soda
  • 1 1/2 cups packed light brown sugar
  • 12 tablespoons butter, melted
  • 2 eggs
  • 2 teaspoons vanilla extract
  • 1 cup plus 2 tablespoons Reese’s Pieces
  • 1 cup plus 2 tablespoons plain M&Ms
  • Candy eyeballs


Preheat oven to 350 degrees. Line a 9 x 13 pan completely with foil and lightly spray with baking spray.

Reserve 1 cup each of Reese’s Pieces and M&Ms for mixing into the batter; save the remaining portions for pressing onto the top along with the candy eyeballs.

In a large bowl, combine flour, salt, baking soda, and brown sugar; mix well to combine.

Add melted butter and stir to incorporate slightly; add eggs and vanilla extract and stir well to fully combine. The dough will be fairly dry, so you’ll want to use your hands to fully incorporate your ingredients.

Add candies and mix with your hands to combine well.

Press dough into the prepared pan, then place candy eyeballs at regular intervals so you’ll be able to cut your finished blondies (mostly) without chopping the eyeballs in half. Sprinkle the top with the remaining candies and press them into the dough.

Bake for 23-25 minutes, until a cake tester inserted in the center comes out clean.

Cool in pan for about 10-15 minutes, then lift out by the foil and place on a wire rack; peel foil back slightly and allow to cool completely.

Once cool, remove foil entirely and cut into bars. Store in an airtight container.

Makes 24.