Lima Bean and Broccoli Casserole in Alfredo Sauce

Ingredients

• • 3 cans (14 oz/398 ml each) lima beans (see note)
  • 1 small garlic clove, coarsely chopped
  • 1 1/2 cups (105 g) fresh Parmesan cheese, finely grated, plus more for serving
  • 1 broccoli crown, cut into small florets
  • 2 tbsp (30 ml) olive oil, plus more for serving
  • 1/2 cup (125 ml) water
  • 2 cups (50 g) arugula