Prepare raspberry simple syrup by combining water and Truvia Baking Blend in a small saucepan.

Bring to a boil, then remove from heat and add raspberries.

Muddle raspberries until no large pieces remain.

Set aside to cool.

In a cocktail glass, gently muddle mint leaves.

Add 2 oz. rum, 2 oz. sparkling water, and 2 oz. simple syrup.

Stir, then top with crushed ice and garnish with mint sprigs and raspberries.