Sourdough Chocolate Sandwich Cookies

For the Chocolate Cookies

• 1 cup unsalted butter, softened
• 1 cup brown sugar
• ½ cup granulated sugar
• 1 large egg
• 1 teaspoon vanilla extract
• ½ cup sourdough discard (unfed)
• 1¾ cups all-purpose flour
• ½ cup unsweetened cocoa powder
• 1 teaspoon baking soda
• ½ teaspoon baking powder
• ½ teaspoon salt
• ½ cup chocolate chips (optional for extra richness)

For the Cream Filling

• ½ cup unsalted butter, softened
• 1½ cups powdered sugar
• 1 teaspoon vanilla extract
• 2 tablespoons heavy cream or milk
• Pinch of salt

Ingredient Notes

Sourdough Discard

This recipe uses unfed sourdough starter discard, which adds subtle tanginess and moisture without overpowering the chocolate flavor.

Cocoa Powder

Use high-quality unsweetened cocoa powder for the richest chocolate flavor.

Butter

Softened butter ensures a smooth dough and creamy filling texture.

How to Make Sourdough Chocolate Sandwich Cookies

Step 1: Prepare the Cookie Dough

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