In a large pot, combine ground beef with diced green peppers & onions. Cook over med-high heat until hamburger is brown.
When hamburger is brown, drain excess grease and then place back into pot.
Add diced tomatoes and tomato sauce to pot. Continue cooking for a few minutes over medium-high heat, stirring well.
In a separate bowl, combine beef bouillon cubes with 4 cups hot water. Stir until cubes are dissolved then add to pot. Follow with rice, sugar, & seasonings.
Let simmer on low-medium heat for about 20-25 minutes before serving. Top with shredded cheese and/or a dollop of sour cream (optional).
Recipe by Love of Family & Home at https://loveoffamilyandhome.net/2014/02/stuffed-pepper-soup.html