Prepare a 9×9-inch baking dish by lining it with parchment paper, ensuring it comes up on all sides. Lightly spray with nonstick cooking spray to prevent sticking, then set aside.

In a small glass bowl, combine the banana flavoring and yellow food color gel. Stir well to blend the flavors and colors, then set it aside for later.

In a heavy-bottomed saucepan, add the salted sweet cream butter, half and half, heavy cream, and clear vanilla flavoring. Heat over medium, stirring continuously until everything is melted and bubbly.

Gradually add in the granulated sugar while stirring constantly. Bring the mixture to a simmer, which should take about 6 to 7 minutes. Allow it to simmer for another 3 minutes before removing from heat.

Stir in the white baking chips, then cover the saucepan. Let it sit for 3 to 4 minutes so the chips can melt thoroughly.

Once melted, add the marshmallow fluff to the saucepan, stirring until it’s fully incorporated and creamy.

Pour in the banana flavor and yellow food gel mixture. Stir well until the fudge reaches a uniform color and the banana aroma fills your kitchen.

Use a spatula to spread the fudge mixture evenly into the prepared baking dish. If desired, sprinkle crushed Nilla wafers on top for some added crunch, then cover with aluminum foil.

Allow the fudge to sit at room temperature for 30 minutes before transferring to the refrigerator. Chill for at least four hours to achieve the perfect set.

Once fully set, lift the fudge out using the parchment paper and cut into 25 delightful pieces. Keep refrigerated until you're ready to enjoy or share!