Halloween Spider Web Chocolate Cupcakes

Name: Halloween Spider Web Chocolate Cupcakes
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American
Ingredients: ¼ cup caster sugar; ¼ cup unsalted butter (soft); 2 tablespoons peanut butter; 1 large egg; ½ teaspoon vanilla bean paste or extract; 1 cup plain flour; 1 teaspoon baking powder; ¼ teaspoon fine sea salt; ½ cup whole milk; ½ cup chocolate chips; ½ cup caster sugar; 1 egg white (about 1.88 ounces or 53 grams); 2-3 drops lemon juice; ⅓ cup unsalted butter (soft, diced); ½ cup icing sugar; ¼ cup cocoa powder; ¼ cup whipping cream; ½ teaspoon vanilla extract; 1 teaspoon black food coloring paste