Melt butter with canola oil in a large skillet over medium heat until it stops foaming. This allows the water in the butter to evaporate.
Add garlic; cook and stir for about two minutes, until it is just beginning to brown.
Add crumbled bacon and the grease from the bacon pan.
Put in the spinach and cook for approximately five minutes. Stir with bacon until the leaves are dark and have reduced to about a quarter their original size. Serve.