Prepare the Veggies: Begin by cutting the broccoli into small florets. Dice the red and yellow bell peppers, chop the onion, and dice the tomatoes.
Cook the Veggies: Heat olive oil in a large skillet over medium heat. Add the onion, bell peppers, and tomatoes. Sauté for about 5-7 minutes until softened.
Make the Cauliflower Batter: In a large bowl, whisk together the eggs and milk. Stir in the flour, garlic, and grated cheese. Season with salt and pepper. Add the sautéed vegetables and fold them into the batter.
Cook the Cauliflower Skillet: In the same skillet, add a bit more olive oil, if necessary, and pour the cauliflower mixture into the pan. Cook over medium heat for 10-15 minutes, until the edges are golden and the center is set. Cover the skillet with a lid to ensure even cooking.
Make the Creamy Sauce: In a small saucepan, heat the olive oil over medium heat. Add the minced garlic and cook for 1 minute. Pour in the heavy cream, stirring occasionally. Add lemon juice, salt, and pepper, and let it simmer until thickened.
Finish the Dish: Once the cauliflower skillet is ready, plate it. Drizzle the creamy garlic sauce over the top and garnish with chopped parsley.