Barb’s tart — Les Petites Gourmettes

Ingredients

• 1 1/4 cups all-purpose flour
• ½ cup unsalted butter, chilled and cut into pieces
• 1 teaspoon salt
• ½ teaspoon freshly ground black pepper
• 2 tablespoons sour cream
• 2 tablespoons ice water
• 1 pound fresh asparagus
• 2 tablespoons Dijon mustard
• 2 cups grated Gruyere cheese
• 1 red bell pepper, roasted, seeded, peeled, and diced
• 3 ounces cream cheese
• 1/2 heavy cream
• 2 egg yolks
• 1 whole egg
• Salt and pepper to taste