Preheat oven to 400°F.
Drain spinach and set aside.
In a mixing bowl, whisk together eggs and milk.
Once combined, add in sun-dried tomatoes and salt and pepper.
In a skillet, sauté onions in olive oil on medium heat (about 2 minutes, or until translucent), add minced garlic and sauté for one more minute. Add spinach.
In a pre-greased muffin pan, add spinach mixture to fill cups about one-third to half-way.
Pour egg mixture over the top.
Sprinkle goat cheese over the top of each “muffin” and put back in the oven for 10 minutes or until muffins appear puffy and golden.
Remove from oven and enjoy!