In a saucepan over medium heat, heat strawberries until reduced by half, stirring. Place in freezer for 20 minutes to cool.
In a medium bowl, whisk together sweetened condensed milk, milk, vanilla, and salt until smooth and thickened.
14 fl oz sweetened condensed milk, ⅛ teaspoon salt, 1 teaspoon pure vanilla extract
Beat heavy whipping cream with a stand mixer, hand mixer, or whisk until stiff peaks form, about 2-5 minutes.
2 cups heavy cream
Gently fold milk mixture into whipped cream and stir until combined, being careful not to deflate the whipped cream. Gently fold in Oreos.
Pour into a 9x5 loaf pan or other freezer-safe container and smooth the top. Cover with plastic wrap and freeze for at least 4 hours or overnight. To serve, allow to sit at room temperature for about 15 minutes to soften.