Pinto Beans with Sage

I found this recipe in my file folder, I thought it came from Martha Stewart but when I searched her web site it wasn't there so it might have been another magazine.

2 c. dried pinto beans
2 Tbsp. butter
2 Tbsp. olive oil
1 yellow onion, chopped
6 cloves garlic, minced
7 slices applewood smoked bacon, cut into 1/4 in pieces
4 1/2 c. chicken stock
8 fresh sage leaves, plus more coarsely chopped, for garnish
Salt and pepper to taste

Place beans in a large bowl, and cover with water by 2 inches. Loosely cover, and soak in the refrigerator overnight.

Preheat oven to 375. Drain beans. Melt butter with oil in a large saucepan over medium high heat. Reduce heat to medium, and add onion, garlic, and bacon. Cook, stirring occasionally, until bacon is crisp.

Stir in stock, beans and sage. Bring to a boil; cover, and transfer to the oven. Bake until beans are tender, about 1 hour and 45 minutes. Season with salt and pepper and sprinkle with additional sage.