01 - Melt the butter in a small saucepan over medium heat. Cook, swirling occasionally, until it foams and turns golden brown with a nutty aroma, about 3 to 4 minutes. Remove from heat and allow to cool slightly.
02 - In a blender, add coconut milk, frozen banana, shredded coconut, brown butter, maple syrup or honey, cinnamon, vanilla extract, sea salt, and chia seeds if using.
03 - Blend on high speed until the mixture is smooth and creamy.
04 - Pour the blended smoothie into a small saucepan and gently warm over low heat until just heated through without boiling, or microwave in 30-second increments, stirring between each.
05 - Transfer to mugs or heatproof glasses. Optional: garnish with additional cinnamon or toasted coconut flakes. Serve warm.