HEAT TREAT THE FLOUR. Spread out the flour on a microwave safe plate and heat in 30 second intervals until the flour is 165°C / 74°C. Alternatively, heat the oven to 350°F / 175°C and bake the flour until it has reached the appropriate temperature. Set aside to cool for 10 min.
In the bowl of a stand mixer fitted with the paddle attachment or with a hand mixer, beat together the butter and sugar until light and fluffy (~3 min.)
Add in the milk and vanilla and beat until combined.
Add in the flour and salt, and fold the mixture together just until almost all the flour has been incorporated. Then, add in the chocolate chips and fold until combined.
Remove the heart molds from the freezer, and dish out 1 tbsp. of cookie dough into each mold.
Push the cookie dough down to pack it in, then top with more melted chocolate.
Set the molds back into the freezer until they have set.
Remove the cookie dough hearts from their molds, and (optional) drizzle with more melted chocolate, and rose petals.
Serve and enjoy!