What are some good fillings for plain white cupcakes that easy to make?

1. Chocolate ganache: This is a classic and versatile filling that can be made with any type of chocolate. Simply heat heavy cream and chocolate together until the chocolate is melted and smooth. Let cool slightly before filling the cupcakes.

2. Vanilla buttercream: This is another classic filling that can be easily customized with different flavors. Simply beat butter, sugar, and heavy cream together until light and fluffy. Add vanilla extract to taste.

3. Fruit preserves: This is a simple but delicious way to add flavor to your cupcakes. Simply fill the centers with your favorite fruit preserves.

4. Peanut butter: This is a great filling for chocolate lovers. Simply mix together peanut butter, powdered sugar, and milk until smooth.

5. Cream cheese frosting: This is a rich and tangy filling that pairs perfectly with red velvet cupcakes. Simply beat together cream cheese, butter, powdered sugar, and vanilla extract until light and fluffy.

6. Lemon curd: This is a bright and flavorful filling that is perfect for spring or summer cupcakes. Simply whisk together egg yolks, sugar, cornstarch, lemon zest, and lemon juice until smooth. Cook over medium heat until thickened and bubbly. Let cool completely before filling the cupcakes.