Creamy Summer Squash

CREAMY SUMMER SQUASH2 T. butter½ c. grated onion1 T. minced garlic1 lb. yellow squash, trimmed and shredded1 lb. zucchini, trimmed and shredded1 t. kosher salt1 T. flour¼ c. sour cream1 T. minced fresh dill1 T. fresh lemon juice1 T. lemon…