Turkey Sweet Potato Shepherd's Pie

INGREDIENTS

2 1/2 lb

sweet potatoes, peeled and cut into 1-inch cubes

1 tbsp

extra virgin olive oil

2 lb

ground turkey

large onion, chopped

large carrots, grated

ribs celery, chopped

2 tsp

poultry seasoning

5 tbsp

butter, divided

4 tbsp

all-purpose flour

2 cups

chicken broth

few dashes Worcestershire sauce

8 oz

frozen peas

1/4 cup

sour cream

2 cups

shredded sharp cheddar cheese