Crockpot Gingered Chickpea with Spicy Tomato Stew

INGREDIENTS

• 1 tbsp olive oil
• 2 onions, finely chopped
• 4 cloves garlic, finely chopped
• 2 tbsp minced fresh ginger
• 2 tsp ground coriander
• 1 tsp coriander seeds
• 1 tsp salt
• 1/2 tsp freshly ground black pepper
• 2 tsp balsamic vinegar
• 2 cups coarsely chopped tomatoes, canned or fresh
• 2 cans (15 oz each) chickpeas, rinsed & drained, or 2 cups dried chickpeas, cooked & drained
• 2 cups (packed) fresh spinach leaves