Preheat and Prep: Preheat oven to 350°F (175°C) and line two muffin pans with cupcake liners.

Prepare Batters: Make the cake mix and brownie batter according to the package instructions.

Layer Batter: Spoon about 2 tablespoons of brownie batter into the bottom of each cupcake liner. Fill the rest of the cup with vanilla cake batter.

Bake: Bake until a toothpick inserted into the middle of a cupcake comes out clean, about 20 minutes.

Cool: Let the cupcakes cool completely in the muffin tins. Repeat with the remaining batter to make 30 cupcakes total.

Make Frosting: While the cupcakes are cooling, make the frosting. Add the chopped strawberries to a food processor and blend until the strawberries are mashed and almost completely pureed.

Cream Butter and Cheese: In a large bowl, combine the softened cream cheese and butter and beat with a hand mixer until smooth.

Add Sugar and Vanilla: Gradually add the powdered sugar and beat until fluffy. Add the vanilla extract and the strawberry puree and mix until evenly incorporated.

Add Colour: Stir in food coloring, if desired, for a pinker color.

Frost Cupcakes: Frost the cooled cupcakes with the strawberry frosting.