Instructions :
Prepare the vegetables:

After grating the potatoes and zucchini, place them in a colander and press them to extract as much liquid as possible so that the fritters are crispy.
Mix the ingredients:

In a large bowl, combine the grated potatoes, zucchini, chopped onion and bell pepper. Add the beaten eggs, parsley and grated cheese. Season with salt and black pepper. Mix well until well combined.
Cook the fritters:

Melt butter with a little olive oil in a large skillet over medium heat. The oil helps prevent the butter from burning.
Pour a generous amount of the vegetable mixture into the skillet for each fritter. Flatten them slightly with a spatula to form rounds.
Fry the fritters until golden brown and crispy, about 4 to 5 minutes per side.
Serve:

Serve the zucchini and potato fritters hot, ideally accompanied by sour cream or a fresh green salad for a complete meal.