1. 1. Preheat Oven and Prepare Dish: First, preheat your oven to 375°F (190°C). Then, lightly grease a 9×13 inch baking dish with olive oil or cooking spray.

2. 2. Sauté Vegetables: Next, heat 1 tablespoon of olive oil in a large skillet over medium heat. Add the diced red bell pepper and sauté for 3-5 minutes until it begins to soften. Stir in the chopped spinach and cook until it wilts completely, about 2-3 minutes. Remove from heat.

3. 3. Combine Ingredients: Meanwhile, in a large mixing bowl, whisk together the large eggs, milk, garlic powder, dried oregano, salt, and black pepper until well combined and slightly frothy.

4. 4. Assemble Bake: Then, spread the sautéed bell pepper and spinach evenly across the bottom of the prepared baking dish. Scatter the chopped sun dried tomatoes, crumbled feta cheese, and sliced Kalamata olives over the vegetables.

5. 5. Pour Egg Mixture: Carefully pour the whisked egg mixture over the vegetables and cheese in the baking dish. Gently swirl the dish to ensure the eggs are evenly distributed and all ingredients are somewhat submerged.

6. 6. Bake: Finally, place the baking dish into the preheated oven. Bake for 30-35 minutes, or until the egg bake is set in the center and lightly golden brown on top. A knife inserted into the center should come out clean.

7. 7. Cool and Serve: Remove the Mediterranean Egg Bake from the oven. Let it cool for 5-10 minutes before slicing and serving. This allows the bake to set up properly.