Preparation Heat 3 tablespoons oil in heavy large skillet over medium heat. Add onion and next 4 ingredients. Cover; cook until vegetables release their juices, stirring occasionally, about 12 minutes. Uncover; sauté until juices evaporate, about 10 minutes. Add garlic; cook until vegetables are very tender and just beginning to brown, about 12 minutes longer. Cool completely. Puree vegetable mixture and sour cream in processor until almost smooth. Season generously with salt and pepper. Transfer to bowl. Sprinkle with capers. Preheat broiler. Arrange bread slices on baking sheet. Brush both sides of bread slices with 1/3 cup oil. Toast about 2 minutes per side. Cool. Serve with spread. A combination of dried thyme, basil, savory and fennel seeds can be substituted for herbes de Provence.
Preparation Heat 3 tablespoons oil in heavy large skillet over medium heat. Add onion and next 4 ingredients. Cover; cook until vegetables release their juices, stirring occasionally, about 12 minutes. Uncover; sauté until juices evaporate, about 10 minutes. Add garlic; cook until vegetables are very tender and just beginning to brown, about 12 minutes longer. Cool completely. Puree vegetable mixture and sour cream in processor until almost smooth. Season generously with salt and pepper. Transfer to bowl. Sprinkle with capers. Preheat broiler. Arrange bread slices on baking sheet. Brush both sides of bread slices with 1/3 cup oil. Toast about 2 minutes per side. Cool. Serve with spread. A combination of dried thyme, basil, savory and fennel seeds can be substituted for herbes de Provence.