Heat oil in a large skillet over medium heat, add the carrots and cover with a lid.
Cook for 2-3 minutes, reduce heat to medium-low and then stir in the garlic. Cover and continue for cook for 2-4 additional minutes until the carrots are softened. (If you prefer your vegetables more on the crisp side, cook for less time.)
Add the spinach, a few handfuls at a time, covering and allowing to wilt between additions until it has all been added. Stir to mix with the carrots.
Stir in the salt, pepper and any additional seasonings. Remove from heat.
Serve.
Notes
LeftoversStore leftovers in an airtight container in the refrigerator for up to 4 days.