Rinse the quinoa well in a fine mesh strainer to remove its natural bitterness.
In a small or medium saucepan, combine the rinsed quinoa, full-fat coconut milk, water, brown sugar, cinnamon, and salt.
Bring to a gentle boil over medium heat, then reduce to low. Cover and simmer for 15 to 20 minutes, stirring occasionally, until the quinoa is tender and the mixture has thickened into a creamy consistency.
Stir in vanilla extract if using. Taste and adjust sweetness if needed. Serve warm, topped with sliced almonds and your choice of fruit.
Notes
Want it thicker? Simmer uncovered during the last 5 minutes or mash some quinoa with the back of a spoon.
For extra creaminess, add a splash of coconut milk at the end.