Preheat oven to 350°F (175°C)
Grease and line a loaf pan
In a bowl, whisk eggs, melted butter, almond milk, vanilla, and sweetener
In another bowl, mix almond flour, baking powder, baking soda, and salt
Combine wet and dry ingredients until smooth batter forms
In a small bowl, mix swirl ingredients
Pour half of the batter into loaf pan
Add half of cinnamon mixture and swirl with a knife
Pour remaining batter and top with remaining cinnamon mixture
Swirl gently to create a pattern
Bake for 35–40 minutes until firm and golden
Let cool completely before slicing