In a large pot (with a lid) over medium heat, heat oil.
Add onion, garlic, carrots, and celery, and saute for 5 to 7 minutes.
Add split peas, water, and bouillon or paste, cover with the lid, lower the heat to a simmer, and cook for 45 minutes. Uncover and cook for 15 minutes.
Serve garnished with salt and pepper.
Notes
This split pea soup is a perfect choice for meal-prep Sundays! You can make a double batch and enjoy it for a few days of the week. If you’re afraid you’ll get bored of the same meal, do not fret. You can customize it every single time. You can add some cooked rice one day and some spicy cooked tofu the next.