1. In a large bowl, sift together flour, cornstarch, baking soda and salt. Whisk and set aside.
2. In a double broiler, melt down semi-sweet chocolate and hot water until the chocolates have melted down completely and smooth sauce comes together. Add 1/2 cup sugar and stir just until the sugar has dissolved. Remove from heat and set aside.
3. In the bowl of your mix master, beat together butter until whipped. Add eggs one at a time until combined. Add remaining 1/2 cup sugar and vanilla.
4. At low speed, add flour mixture alternately with milk. Beat after each addition until a smooth batter forms. Add the chocolate mixture to the cake batter and beat at low speed until well blended. Set mixture aside.
5. Preheat oven to 350 degrees F. and prepare cakes pans. Butter (1) 9-inch square cake plate and (1) 9-inch circular cake pan. Fit each pan with parchment paper and butter the parchment paper, then dust each with cocoa powder.
6. Divide the cake batter between both cake pans. Sprinkle M&M's® Strawberry into each cake pan. Place in the oven and bake for 25-30 minutes or until cake tester comes out clean. Transfer both cakes onto a wire rack and let cool completely.

Assembly:

1. Once the cakes have cooled, remove each from their pans. Divide the circular cake in half.
2. Place the square cake down onto a piece of parchment in a diamond shape. Spread frosting along the edges of the diamond and place the halved circles on each side to form a heart. Spoon the rest of the frosting over the cake to smooth out any uneven edges and gaps between the cakes.
3. In a double broiler, prepare your ganache. Melt down chocolate with cream and syrup until smooth. Remove immediately from heat and drizzle of the cake, spread the ganache evenly over the cake with a knife.
4. Decorate your cake immediately before the ganache sets. Outline the cake with M&M's® Strawberry and pearl sprinkles. If you so desire, you can also create a chocolate stencil for the center simply by melting down 1/4 cup white chocolate melting candies. Transfer the melted chocolate to a piping bag and write out any sweet Valentine’s message on to your cake.
5. Let the cake set before serving and enjoy!