Preheat oven to 350˚F (176˚C). Grease a muffin tin or a 8 by 2 inch square pan with butter or cooking spray.
Place 1 stick of melted butter (4oz), 2 eggs, and 1 cup of spinach into the Blendtec or Vitamix blender. Mix on a lower speed until the ingredients are well combined.
Then, stop the blender and add 1 full package of Brownie Mix.
For Vitamix: Start on speed 1, turn machine on and slowly increase to speed 10. Blend for 20-30 seconds or until mixed.
Pour batter into muffin tin or a 8x8x2 inch pan.
Use a spatula to scrap all the batter out of the jar.
Bake for 10 minutes or until a knife inserted into the center comes out clean.
All done! Enjoy!! Now take a photo, rate it, and share your accomplishments! :) Tag @BlenderBabes & #BlenderBabes
Notes
You can make this with ANY packaged brownie mix, just follow the ingredient type/amounts and instructions for cooking as stated by brownie box. Follow steps to incorporate the spinach.