Lemony White Bean-and-Arugula Salad

INGREDIENTS

2 tbsp

extra-virgin olive oil

1 tsp

grated lemon rind plus 2 Tbsp. fresh juice (from 1 lemon)

1 tsp

Dijon mustard

3/8 tsp

kosher salt

1/4 tsp

black pepper

1 15 ounce can

unsalted cannellini beans, rinsed and drained

1/4 cup

thinly sliced red onion

3 cups

firmly packed baby arugula