Preheat your oven to 350°F. Line an 8x4-inch loaf pan with lightly greased parchment paper.
In a medium bowl, whisk together the cream cheese, granulated sugar, 2 tablespoons Greek yogurt, 2 tablespoons flour, and 1 egg until smooth. Set aside.
In a large bowl, mash the bananas, aiming for a creamy texture with a few lumps. Whisk in the egg, 1/3 cup Greek yogurt, maple syrup, and oil until combined. Mix in the brown sugar and vanilla extract.
In another bowl, whisk together the all-purpose flour, whole wheat flour, baking soda, cinnamon, nutmeg, and salt.
Gently fold the dry ingredients into the wet mix. Stir just until you can't see any flour.
Pour a third of the banana bread batter into your prepared pan. Spoon alternating cream cheese filling and banana batter on top, creating a mosaic. Swirl a knife through in a figure-eight pattern.
Bake for 55 to 70 minutes. Tent with foil if the top burns. The bread is done when a knife comes out clean (internal temperature 200 °F).
Let the bread cool in the pan 15 mins, use the parchment "handles" to lift out the bread and let it cool completely.
Slice up and DEVOUR!