1In a large skillet cook ground beef. Drain excess grease.
2In a separate pan saute the onion, garlic, and green bell pepper in olive oil until tender. Add the cooked ground beef, tomatoes, water, Italian seasoning, and ground black pepper. Add salt, if desire. Simmer for an hour.
3As simmering time nears, in a large pot cook spaghetti until al dente. Drain.
4In a large bowl, toss drained spaghetti with tomato paste. Add cooked sauce; mix well.