Heat a large skillet over medium-high heat.

Add the olive oil to the skillet and let it heat up for a minute.

Add the minced garlic and red pepper flakes (if using) to the skillet and sauté for about 30 seconds until fragrant.

Add the fresh spinach to the skillet in batches, stirring gently until it starts to wilt. Continue adding spinach until all of it is in the skillet.

Sprinkle salt and black pepper over the spinach to taste.

Continue cooking and stirring until the spinach is completely wilted and cooked through, about 3-4 minutes.

If desired, squeeze the juice of a lemon over the spinach and give it a quick stir to combine.

Remove the skillet from the heat and serve the sautéed spinach with garlic immediately.

Enjoy your delicious and nutritious sautéed spinach with garlic!