In a medium saute pan, cook the bell peppers and onions in 2 tablespoons olive oil until soft, 5 to 7 minutes. Add the garlic and cook until fragrant, another 2 minutes. Deglaze the pan with white wine and allow to boil for 1 to 2 minutes. Add the stock, herbs de provence, and beans and simmer for 20 minutes. Pour into shallow bowls and drizzle with the remaining olive oil. Serve with bread slices.