Simple and basic Italian bean soup. Great for a quick fix during the week. My Italian mother-in-law rattled this one out to me over the phone years ago. So glad I wrote it down quick! She doesn't remember telling me. The kids love it for a simple and quick dinner.
Heat olive oil in a pot over medium-high heat. Cook and stir onion in hot oil until tender, about 5 minutes; add garlic and continue cooking until fragrant, 1 to 2 minutes more.
Pour tomato sauce into the pot; stir. Add cannelini beans, basil, oregano, salt, and pepper. Bring the mixture to a simmer, reduce heat to medium-low, and cook until the beans are hot, 5 to 7 minutes more.