Summer Veggie Saute

Ingredients

• 1 large onion, very finely chopped
• 1 Tbsp olive oil
• 1 1/2 cups corn kernels, fresh or frozen
• 1 pound zucchini, chopped
• 1 28-ounce can plum or Roma tomatoes, crushed or chopped
• 1 15-ounce kidney or black beans
• 1 tsp oregano
• Pinch of black pepper