Roughly chop 1 1/2 cups soft sun-dried tomatoes and 1 cup roasted red peppers and transfer to a medium bowl. Stack 6 basil leaves, roll into a tight cylinder and thinly slice. Add to the bowl. Mince 3 garlic cloves and add to the bowl. Add 1 cup crumbled feta cheese and 1/4 cup olive oil to the bowl, season with salt and pepper and toss. Arrange 20 to 24 crostini, crackers or baguette slices on a platter. Divide the mixture evenly among the crostini and drizzle with olive oil.