If you make the portion 2/3 of what you'd initially intended, then make up a small side salad (lettuce, tomato, red onion, carrot, cucumber, vinaigrette dressing (olive oil, balsamic vinegar, salt, black pepper)). [I'm a real pig for pasta, I love it.] It reduces the carbs, changes up the texture of what you're eating, and fresh F&V is the experts go to option for mealtimes. Minimal calories, leafy greens, etc. It's a mither but the left over salad can go in a chicken wrap with hot sauce tomorrow. Variety and avoiding misery.
canned tomato's - 60 cals
5% lean minced beef (500g) - 850 cals
oxo stock - 10 cals
diced onion, minced garlic - 70 cals
500g sheet lasagne - 1750 cals
low cal bechamel sauce - 440g jar = 1320 cals
cheese, cheddar, mozzarella & parmesan (1 cup total shredded) = 550 cals
total 4610 cals
/5 = 922 cals. + side salad ~ 100 cals. It's looking a main meal for the day.