3 (15 ounce) cans pumpkin |
2 (14 ounce) cans chicken broth |
1/2 cup finely chopped onion |
1/2 cup finely chopped celery |
2 tablespoons packed brown sugar |
1 tablespoon pumpkin pie spice |
3/4 teaspoon salt, to taste |
1/4 teaspoon pepper, to taste |
2 cups half-and-half |
2 tablespoons butter |