Garden- Style Lasagna

INGREDIENTS

2 cups

chopped onion

4 cloves

garlic, minced

2 tsp

olive oil, divided

2 cups

chopped zucchini

2 cups

chopped yellow squash

2 cups

thinly sliced carrot

2 cups

chopped broccoli

1 tsp

salt, divided

1/2 cup

all-purpose flour

3 1/2 cups

1% low-fat milk

1 cup

grated fresh Parmesan cheese, divided

1/4 tsp

freshly ground black pepper

nutmeg

1 10 ounce package

frozen chopped spinach, thawed and squeezed dry

1 1/2 cups

1% low-fat cottage cheese

2 cups

pre-shredded part-skim mozzarella cheese, divided

pre-cooked lasagna noodles, divided