Walnut Pâté

1 cup walnut pieces
1 ½ cups cooked cannellini beans or 1 15-oz. can cannellini beans, rinsed and drained
2 Tbs. lemon juice
2 cloves garlic, minced (2 tsp.)
2 tsp. olive oil

Sandwiches

16 slices whole-grain bread
4 large jarred roasted red bell peppers, rinsed, drained, and halved
2 large Anjou, Bartlett, or Concorde pears, peeled and sliced
2 cups baby arugula