Preheat your oven to 375°F (190°C).
Heat a little olive oil in a skillet. Sauté the onion and garlic until softened.
Add zucchini and bell pepper. Cook until they start to soften.
Stir in spinach and cook just until wilted.
In a mixing bowl, combine cottage cheese, eggs, oregano, paprika, salt, and pepper.
Mix the sautéed vegetables into the cottage cheese mixture.
Pour everything into a greased baking dish and sprinkle with mozzarella on top.
Bake for 30–35 minutes until golden and set.
Let it rest for 5 minutes before serving.