2 tbsp olive oil
1 medium yellow onion, diced
1 small fennel bulb, thinly sliced
8 oz mushroom of choice, sliced
3 cloves garlic, minced
1/2 tsp red pepper flakes
1/2 cup dry white wine
1 tbsp tomato paste
3 cups crushed tomatoes
3 cups cooked chickpeas
1.5 cups vegetable stock
3/4 cup castelvetrano olives, pitted and halved
3 cups chopped hearty greens (kale, swiss chard, spinach)