Preheat oven to 350 degrees.
Line a baking sheet with parchment paper.
Place melted butter and sugar in the bowl of a stand mixer, and beat with paddle attachment on speed 2 until smooth.
Add eggs, one at a time, mixing until each is fully incorporated on speed 2.
Add extract, Jell-o powder, strawberries, baking powder, baking soda and salt, mixing well on speed 2.
Use a spatula to scrape down the sides, and add 1½ cups of flour.
Mix on low; scrape sides with spatula, add milk, and mix until fully blended.
Add remaining cup of flour, and mix.
Add food coloring, if desired, and mix until fully integrated.
Scoop approximately 1-1/2 tablespoons batter, and place spaced evenly onto parchment paper-lined baking sheet. (Will take two batches to bake all of the batter.)
Bake for 15 to 20 minutes, or until cakes spring back when touched.
Allow to cool for 2 minutes on baking sheet.
Transfer to baking rack to cool completely.