Tunisian Pepper and Tomato Casserole

• 2 Spanish onions
• olive oil
• 6 ripe tomatoes, sliced
• 3

Slice onions thickly and sauté in 6 tablespoons olive oil until golden. Add sliced tomatoes, diced peppers, tomato concentrate and garlic, and simmer vegetables until soft and cooked through. Add 4 tablespoons olive oil; season to taste with salt, freshly ground black pepper, cayenne and paprika, an