01 - Preheat the oven to 350°F. Line an 8x8-inch baking pan with parchment paper, ensuring edges overhang for easy removal.
02 - In a large mixing bowl, mash the avocado until completely smooth. Whisk in the honey or maple syrup, melted coconut oil, egg, and vanilla extract until thoroughly combined.
03 - In a separate bowl, stir together rolled oats, whole wheat flour, ground flaxseed, baking soda, and salt.
04 - Add the dry ingredients to the avocado mixture and mix just until the batter comes together—do not overmix.
05 - Gently fold in mini chocolate chips and nuts, if using, until evenly distributed.
06 - Transfer the batter to the prepared pan. Spread evenly and smooth the top with a spatula.
07 - Bake for 20 to 25 minutes, or until the edges are golden and a toothpick inserted in the center comes out mostly clean.
08 - Let the bars cool completely in the pan. Use the parchment paper to lift them out, then slice into 12 bars.