Process the milk, strawberries, cream, ice-cream, strawberry topping and half the oreo cookies in a food processor until smooth.
Drizzle the insides of 4 x large capacity serving glasses with excess strawberry and chocolate topping. Pour the milk mixture evenly among the prepared glasses.
Top the milkshakes with whipped cream and sprinkles. Thread each doughnut onto a straw and place in the glass. Top the cream with the remaining biscuits and extra strawberries. Serve immediately.