Whisk cocoa and cinnamon in a large bowl. Add 1/2 cup chocolate milk; whisk until smooth. Whisk in eggs and remaining chocolate milk until blended.
Melt 1 tablespoon butter on a hot griddle. Dip bread slices in the chocolate milk mixture, soaking on each side for 30 seconds. Toast bread in butter on the griddle for 2-3 minutes per side or until sides are golden brown, adding butter as necessary.
Top with whipped cream. Garnish with strawberries and chocolate curls.
Recipe Tip: Vanilla extract could be substituted for the cinnamon in this recipe.