Step 1

Preheat the oven to 350 °F (177°C).

Step 2

Whisk the eggs, cream, and green onion in a large bowl. Season with thyme, salt, and pepper.

Step 3

Add butter to an oven-proof skillet over medium heat on the stovetop. Once it melts, sauté minced garlic for 1 minute, then add the spinach and stir until it begins to wilt.

Step 4

Remove the spinach from heat and combine it with the eggs in a bowl. Crumble the feta cheese with your hands into the egg mixture and stir until combined.

Step 5

Add more butter to your pan, if needed, so nothing sticks. Pour the egg and spinach into the skillet. Use a fork or spatula and move the spinach around until it's distributed evenly throughout the frittata.

Step 6

Bake for 15-20 minutes until the top turns golden brown and the edges set.