3 tablespoons butter
2/3 cup finely chopped shallots (about 4 large)
Cook bacon in heavy large skillet over medium heat until crisp. Transfer to paper towels and drain. Discard all but 3 tablespoons bacon fat in skillet. Add butter to skillet and melt over medium heat. Add shallots and sauté until tender and golden, about 4 minutes. Add beans and sauté until heated through, about 6 minutes. Add bacon to skillet and toss to blend. Season to taste with salt and pepper.
ADAPTED FROM EPICURIOUS