Place bacon in a large skillet over medium-high heat. Cook until browned on one side, then turn over to cook on the other side. Add almonds to the skillet at this time; cook and stir until almonds are light golden brown.

Remove bacon to a paper towel-lined plate, leaving bacon drippings in the skillet. Crumble or chop bacon, then return to the skillet. Melt butter in with drippings. Add green beans; cook and stir until tender, about 8 minutes.