Slice your day-old biscuits in half horizontally, creating tops and bottoms.

In a mixing bowl, whisk together 4 eggs, 1 cup of whole milk, 1 teaspoon of vanilla extract, and 2 teaspoons of ground cinnamon until smooth.

Place a large skillet over medium-high heat and add 2 tablespoons of butter. Allow it to melt and bubble.

Carefully dip each biscuit half into the custard mixture, coating evenly for about 2-3 seconds.

Place the dipped biscuit halves into the hot skillet, cooking for 2-3 minutes on each side until golden brown.

Transfer the cooked biscuits to plates and serve warm with toppings like maple syrup, fresh berries, or whipped cream.