Heat OLIVE OIL in soup pot on medium-high heat until shimmering.
Add ONIONS, CARROTS, CELERY, and GARLIC.
Sauté a few minutes until tender, stirring as needed.
Stir in TOMATOES, VEGETABLE BROTH, WHITE BEANS, ITALIAN SEASONING, SALT, and CRUSHED RED PEPPER.
Bring everything just to a boil. Lower heat and simmer 10-15 minutes, stirring as needed.
Stir in KALE or other greens at any point during the simmering process.
Serve warm.
Refrigerate in an airtight container up to 5 days or freeze up to 3 months (longer if vacuum-sealed).
