Zucchini Bechamel Casserole

INGREDIENTS

medium-sized zucchini, washed, dried, sliced in rounds or lengthwise

1 1/2 lb

lean ground beef

1 cup

shredded mozzarella

small yellow onion, minced

1 tsp

allspice

1/2 tsp

ground green cardamom

salt and pepper

olive oil

1/2 cup

olive oil

6 tbsp

all-purpose flour

4 cups

2% milk, room temperature

1/2 tsp

nutmeg

salt