Not a muffin or a bread, but if you can get some good tomatoes, I highly recommend this tomato peach salad. I have made it without the two different types of tomatoes, and without the feta.
http://www.myrecipes.com/recipe/summer-peach-tomato-salad
1/4 cup thinly vertically sliced red onion
1/2 pound ripe peaches, pitted and cut into wedges
1/4 pound heirloom beefsteak tomatoes, cut into thick wedges
1/4 pound heirloom cherry or pear tomatoes, halved
1 tablespoon sherry vinegar
1 1/2 teaspoons extra-virgin olive oil
1 teaspoon honey
1/8 teaspoon salt
1/8 teaspoon freshly ground black pepper
1/4 cup (1 ounce) crumbled feta cheese
2 tablespoons small basil leaves or torn basil
Preparation
1. Combine first 4 ingredients in a large bowl.
2. Combine vinegar, olive oil, honey, salt, and pepper in a small bowl, stirring with a whisk. Drizzle vinegar mixture over peach mixture; toss well to coat. Sprinkle with cheese and basil.