I saw a bar recipe using apple and lemon zest on a muffin mix. I tried it from scratch with shredded zucchini and fresh blueberries instead. It’s a nifty combo. —Shelly Bevington, Hermiston, Oregon


Test Kitchen Tips
  • If you don't have buttermilk in your fridge, make your own by mixing 1 to 2 tablespoons of lemon juice or vinegar into 1 cup of milk. Allow it to sit for 5-10 minutes.
  • Line your pan with parchment paper for easy removal and cleanup!
  • Blueberries

    If using frozen blueberries, use without thawing to avoid discoloring the batter.

    Watch How to Make Blueberry Zucchini Squares