Vegetarian Shepherd's Pie

lbs Russet or Yukon Gold potatoes, peeled

whole garlic clove

dry brown lentils ((1/2 lb))

bay leaf

olive oil

onion, diced

diced carrots

diced celery

garlic cloves, crushed

frozen peas

corn

fresh chopped parsley, divided

vegan Worcestershire or tamari sauce

dried oregano

cayenne pepper

milk or milk substitute (soy, almond, or rice milk)

butter or vegan butter substitute (ex. Earth Balance)

Salt and pepper

Nonstick cooking oil spray

Sriracha sauce for topping ((optional))