Grate the zucchini and squeeze out any excess moisture using clean kitchen towel.

Transfer the zucchini into a bowl. Add the beef, quinoa, garlic, egg, 1 teaspoon of salt, and ¼ teaspoon of pepper. Combine all the ingredients together using clean hands.

Form the mixture into 8 patties. Heat a part of the oil in a grill pan over medium-high heat, and cook the burgers 5-6 minutes each side.

The burgers can be stored in an airtight container in the refrigerator for 3-4 days. You may also freeze the burgers for a later meal.