First up, you'll want to get that oven heated! Set it to 375 degrees F (190 degrees C). Preheating ensures that your eggs cook evenly and gives them a lovely structure.

Grab four 6-ounce ramekins and give them a light spritz of nonstick cooking spray. This step is essential to ensure the eggs slide right out without any fuss when it’s time to serve.

In a large skillet, heat the olive oil over medium-high heat. Once it’s shimmering, toss in the shallot and minced garlic. Cook them together for about 2 to 3 minutes, stirring frequently until the shallots become translucent and fragrant. The combination of shallots and garlic creates a flavorful base that’ll elevate your dish.

Next, add the fresh spinach to the skillet. Using tongs or a wooden spoon, stir and cook until the spinach wilts down, which should take about 3 to 5 minutes. You’ll know it’s ready when it shrinks considerably and gives off a vibrant color.

Evenly distribute the sautéed spinach mixture among the prepared ramekins. Make sure each one gets a good helping of that savory goodness!

Now it’s time to crack those eggs! Gently break an egg into each ramekin. It's okay if some of the whites spread out a bit; we’re going for a rustic look here! Season the eggs with salt and black pepper to taste. Don’t be shy; seasoning makes all the difference.

Place the ramekins on a rimmed baking sheet to catch any spills. Bake in the preheated oven for about 15 to 20 minutes. You’ll know they’re done when the egg whites are set, but the yolks remain runny—perfect for dipping your toast!

Once out of the oven, let them sit for a minute before garnishing. Top each ramekin with the diced avocado, halved grape tomatoes, crumbled feta, and a sprinkle of red pepper flakes for some extra flair. If you like, finish with fresh herbs for a pop of color and flavor!