Add the butter and olive oil to a large non-stick skillet or pan.
Once hot, add the garlic, then the spinach, salt, and pepper, and saute for 2-3 minutes, or until wilted.
Remove the spinach from the pan and serve with lemon slices.
Notes
TO MAKE AHEAD: Cook the spinach as normal, then store it in an airtight container in the fridge overnight.TO STORE: The leftover cooked spinach can be stored in an airtight container in the fridge for 3 to 5 days.TO REHEAT: Warm the sautéed spinach and garlic in the microwave or in a lightly oiled skillet over medium heat until warmed through.