Prepare the zucchini: Grate the zucchinis using a box grater. Place the grated zucchini in a clean kitchen towel and squeeze out as much liquid as possible.

Mix ingredients: In a large bowl, combine the grated zucchini, grated onion, beaten eggs, flour, salt, black pepper, and garlic powder. Stir until well combined.

Heat the oil: Pour enough vegetable oil into a large skillet to cover the bottom by about 1/4 inch. Heat over medium-high heat until shimmering.

Form the latkes: Scoop about 2 tablespoons of the zucchini mixture per latke and flatten slightly into small patties. Carefully place them into the hot oil.

Fry the latkes: Cook for 3-4 minutes per side, or until golden brown and crispy. Adjust the heat if necessary to prevent burning.

Drain and serve: Transfer the cooked latkes to a paper towel-lined plate to drain excess oil. Serve warm with sour cream or applesauce.