Preheat your oven to 350°F (175°C) and line a loaf pan with parchment paper.

In a large bowl, mash the ripe bananas and mix in the apple sauce, maple syrup, and vanilla extract.

In a separate bowl, whisk together the flour, baking soda, salt, cinnamon, and nutmeg before folding it into the banana mixture.

In a small bowl, mix together the ube halaya, non-dairy milk, and lemon juice until smooth.

Spoon alternating layers of banana batter and ube mixture into the loaf pan, swirling gently with a knife.

Bake in the preheated oven for 50-60 minutes, checking for doneness with a toothpick.

Remove from the oven and cool in the pan for 10 minutes before moving to a wire rack.