Heat a large pot over medium heat. Add a drizzle of olive oil (approximately 4 tablespoons), onions, celery, carrots, and bell pepper. Mix and cook for a few minutes; until onion is translucent.
Cover the pot and cook at medium heat until boiling.
Reduce heat to low and cook for 1.5 hours, mixing occasionally.
When soup is creamy and the right consistency, turn off heat and let the soup rest for 10 minutes.
Serve with a side salad, bread, or crackers.
Notes
Regarding the yield:This recipe makes approximately 6 (2 cup) servings, depending on the amount of of each serving your yield may be less.Regarding the soup consistency:Add additional water as needed while cooking, to obtain the soup consistency wanted. Regarding the seasoning:Add additional salt and pepper to taste, if needed.To cook in a crock-pot:Combine all ingredients (except for liquids) into the crock-pot. Add the broth and 4 cups of water. Mix well and cook on high heat for 5-6 hours. If soup is too thick, add more water as needed.