Preheat your oven to 350°F (175°C) and set a rack in the center.

In a non-stick skillet, heat olive oil over medium heat. Add diced onion and bell pepper, sauté for 3-4 minutes until translucent. Stir in chopped spinach and cook for an additional 2-3 minutes until wilted. Season with garlic powder, salt, and pepper, remove from heat.

In a large bowl, whisk together eggs, milk, cottage cheese, Italian seasoning, and a pinch of salt and pepper.

Fold the cooled sautéed vegetables into the egg mixture, then gently mix in the shredded cheese.

Lightly grease a 9-inch pie dish and pour the mixture into the dish, smoothing the top.

Bake in the preheated oven for 40-45 minutes until golden brown and a toothpick inserted comes out clean.

Remove from oven and let cool for 5-10 minutes before slicing and serving warm or at room temperature.