This meal is simple, hearty, cheap, and absolutely delicious (makes the house smell great, too). You need:
1 - 2 lbs Italian sausage links, cut in half
2 cans (14.5 oz) diced tomatoes
2 cans (15.5 oz) white beans- Great Northern or Cannelini. Drain beans but reserve 1/2 cup of liquid.
2 onions, quartered
3 tbsp chopped garlic
2 tbsp balsamic vinegar
2 tsp thyme
2 bay leaves
1 tsp black pepper
oven to 425 degrees

Step 1: Mix

Mix the tomatoes, garlic, vinegar, thyme, bay leaves, and black pepper in a large casserole dish.

Step 2: Add Sausage and Onions

Add the sausage links and onion chunks to the tomatoes. No need to arrange neatly- you'll be stirring it all up later.

Step 3: Roast It Up!

Pop the casserole dish in a 425 degree oven, uncovered, for 45 minutes. It'll look like this when this step is done.

Step 4: Add the Beans

Drain the 2 cans of white beans, but reserve 1/2 cup of the liquid. After the sausage and onions have roasted for 45 minutes, add the beans and reserved liquid and give it all a good stir. Return it to the oven for 10 minutes.