Golden Onion And Zucchini Lasagne

• 7 squares
• 850 ml dry wine (white)
• 325 gr thinly onions about (sliced)
• 250 gr zucchini (sliced)
• 120 gr parmesan about (freshly grated)
• 60 gr butter divided (unsalted)
• 32 gr all purpose flour
• 3 gr thyme (fresh)
• 1 gr thyme (dried)
• some salt