Decent low cal Beef or Quorn Chilli Recipe?

It shouldn't be that bad, check your calculator, sometimes it counts tomato products wrong. Also, it's lower if you skip the beans. Drain the meat of fat after browning. Carefully measure the serving sizes. Most of the time a pot of chili comes out to about 4 - 2 cup servings for me.

I use a big can of crushed tomato, a 14.5 can of diced tomato, a diced zucchini or 2, a diced yellow squash, a small can of mild green diced chilies (sometimes a can of rotel). 1/2 tsp mixed chili powder (Penzey's 3000), 1/4 tsp chipotle powder - spices and chiles to taste, 1 can of black or other beans, 2 cups of water. I used ground chicken breast. Last time I had half chicken breast and half chicken sausage and that was a little higher calorie. About 1 lb meat total I got 3 quarts of chili and it was about 120 calories per 8 oz of chili. Cook the chili until veggies are soft because I leave skins on. You can throw whatever veggies you have in it -- carrots, spinach, corn. Use the recipe calculator to figure out the cals per serving if you measure what you throw in. You can use beef in this, but use the calculator to figure the cals per serving.
One more idea, I usually add a cup of riced cauliflower to my chili when I heat it up (cook the cauliflower first so the consisitancy is the same) and it makes a very hearty dish.

What's a lot of calories? I use 3 different kinds of beans, lean ground beef, and a large can of crushed tomatoes and water along with the spices. A pretty good serving comes out to about 466 calories which I think is a pretty low calorie meal.