Melt cacao butter and butter in a double boiler over medium-low heat. Once melted, whisk in cacao powder and ½ cup maple syrup. Remove from heat and set aside to cool down.
Separate egg yolks from egg whites into two separate mixing bowls.
Add 1 tbsp maple syrup, vanilla extract, and salt to the egg yolks and whisk vigorously until the yolks thicken and lighten in color.
Slowly pour the chocolate mixture into the yolks, whisking while pouring to thoroughly combine. Set aside.
With an electric mixer, beat the egg whites until foamy. Once foamy, slowly begin to drizzle in 3 tbsp of maple syrup while beating on high. Beat the whites until stiff peaks form.
Fold the egg whites into the chocolate mixture in 3 parts using a rubber spatula until just combined. Make sure not to overmix.
Pour heavy cream into a separate mixing bowl and whip with a hand mixer until fluffy.
Fold heavy cream into chocolate mixture. Once again, do not overmix.
Place in the fridge for at least 3 hours or overnight. Top off with homemade whipped cream and fresh raspberries. Store for up to 5 days in an airtight container in the fridge.