Preheat your oven to 350°F (175°C).

Wash and chop your cauliflower, bell peppers, and spinach into uniform pieces.

In a large mixing bowl, add the chopped vegetables, cream cheese, eggs, garlic powder, onion powder, and half of the cheddar cheese. Blend until well combined.

Grease a 9x13-inch casserole dish and spread the vegetable mixture evenly.

Sprinkle the remaining cheddar cheese over the top.

Bake for 30–35 minutes until the top is golden and bubbly.

Let it cool for about 5-10 minutes before serving.