Step 1

In a wide bowl, mix egg, 1 tsp. vanilla extract, 1/4 tsp. cinnamon, and half of the sweetener.

Step 2

In a small bowl, thoroughly mix cream cheese and peanut butter with remaining 1/4 tsp. vanilla extract, 1/4 tsp. cinnamon, and sweetener. Gently spread mixture onto one slice of bread. Top with banana and the other bread slice. Lightly press to seal.

Step 3

Bring a skillet sprayed with nonstick spray to medium-high heat. Add butter and let it coat the bottom. Meanwhile, coat sandwich on all sides with egg mixture.

Step 4

Cook sandwich until golden brown, 2 - 3 minutes per side.