In a small saucepan combine ¼ cup sugar, M&B Lavender, and water. At medium heat, stir constantly until sugar dissolves.
Pour the syrup mixture through a tea strainer to filter out the lavender buds.
In a sugar rimming dish, add 1 tablespoon of sugar, shredded coconut, and the zest of a lime. Prep the rims of two cocktail glasses by rimming with lime juice, then generously coat the rim of each glass with the dry mixture.
Add a couple ice cubes to a cocktail shaker. Measure out Cointreau and tequila into the shaker, and add the prepared simple syrup, a generous squeeze of lime juice, cream of coconut, and M&B Vanilla Powder. Shake vigorously and pour into your prepared glasses. Garnish with M&B Lavender.