Chop onion and garlic. Remove stems from collard greens, rinse, and chop the greens.
Heat 3 tablespoon vegetable broth in large saute pan. When the broth begins to steam, add onions and garlic and saute for 3-4 minutes.
Add ½ cup vegetable broth, tomatoes, and pinto beans to the onions and garlic mixture and bring to a boil.
Add collard greens and simmer for 5 minutes. Season with salt and pepper.
Remove from heat and stir in olive oil and lemon juice. Serve hot.