Preheat the oven to 350 degrees F. In a small saucepan, combine the butter, oil, garlic, herbs and salt. Place over medium-low heat until the butter melts, stirring to mix well
Spoon the butter-oil mixture over the torn bread and toss until the bread soaks up the oil mixture.
Spread the mixture over a rimmed baking sheet in a single layer and toast for 10 minutes. Give the pan a good shake and continue toasting until golden brown, another 8 to 10 minutes. The bread should be crispy but not dried out and rock hard.
In a salad serving bowl, place the toasted bread and pour 1/4 cup of the vinaigrette dressing over the bread. Allow the bread to absorb the dressing, about 5 minutes
Toss in the green pepper, red pepper, red onion, cucumber
Taste, add more dressing if desired and season