🍪 Raspberry Swirl Cookies (Soft butter cookies with a sweet tart raspberry swirl) ⭐ Ingredients For the Cookie Dough 1 cup (225 g) unsalted butter, softened 1 cup sugar 1 large egg 2 tsp vanilla extract 2 ¾ cups all-purpose flour ½ tsp baking powder ¼ tsp salt For the Raspberry Filling 1 cup raspberry jam (seedless preferred) 1 tbsp cornstarch 1 tbsp water 👨‍🍳 Instructions 1. Prepare Raspberry Swirl In a small saucepan, mix jam cornstarch water. Heat 2–3 minutes until slightly thickened. Cool