One Bowl Blondies

  • Author: Dana Gerard
  • Prep Time: 25 mins
  • Cook Time: 20 mins
  • Total Time: 45 mins
  • Yield: 36 1x
  • Category: Dessert
  • Cuisine: American
One bowl blondies at

Use just one bowl to make these easy pan chocolate chip cookies. Can be gluten free and vegan. Makes 36 rich bite-size squares.


  • 1 cup rolled oats or chopped nuts (120 gm) (gluten free okay)
  • 8 tablespoons (1 stick, 4 ounces or 113 grams) butter, melted ( vegan okay)
  • 3/4 cup brown sugar (185 gm)
  • *1 large egg or flax egg
  • 1 teaspoon vanilla
  • 1 cup (4 3/8 ounces or 130 grams) all-purpose or gluten free flour (176 gm)
  • 1/2 teaspoon baking powder
  • 1/8 tsp kosher salt or sea salt
  • 1/2 cup dark chocolate baking chips or mix in of choice (3 oz/100 gm)
  • ****************************************************************************
  • * Flax egg: 1 tablespoon ground flax seeds+ 3 tablespoons water. Mix and chill for 5 minutes.
  • **Other mix in ideas:
  • 1/21 cup chocolate chips or candy
  • 1/21 cup toasted, chopped nuts
  • 1/2 cup mashed bananas
  • 1/2 cup nut butter (peanut, almond, sunflower)
  • 1/2 cup dried fruit (cranberries, cherries, chopped apricots)
  • 1/2 cup bourbon, whiskey or rum + 1 extra tablespoon flour
  • 2 tablespoon of expresso powder mixed in with the vanilla
  • 1/2 teapoon mint or almond extract instead of vanilla


  1. Preheat oven to 350 F and set top baking rack in middle of oven.
  2. Spray and line an 8 x 8 baking dish with parchment or foil.
  3. Measure all ingredients and set next to a large mixing bowl.
  4. Toast oats or nuts: While oven is warming up, place oats or nuts on a rimmed baking sheet lined with parchment until slightly brown, 10-15 minutes, then remove from oven and set aside.
  5. Melt butter: use a microwave safe bowl or brown the butter in a saucepan, stirring continuously over medium heat until it boils. Continue stirring on medium low until butter begins to turn brown, about 5 minutes. Remove from heat and stir in brown sugar. Let cool a few minutes.
  6. In a large mixing bowl, combine egg or flax egg and vanilla and stir until well combined.
  7. Add in butter/sugar mixture and blend.
  8. Add in flour, baking powder and salt and stir with as few strokes as possible until flour disappears.
  9. Add mix ins: oats/ nuts and chocolate chips or other substitutes. Blend until just combined.
  10. Spoon into baking dish and spread evenly across and into corners.
  11. Bake about 20 minutes. Check for doneness with a toothpick. Do not overbake. Let cool.
  12. For the prettiest blondies, freeze or refrigerate until very cold before cutting into 36 small squares.