Prepare cupcake pans by placing liners in 12 cavities.
Combine flour, salt and baking powder in a medium-sized bowl. Whisk well and set bowl aside.
Add sugar and eggs to the bowl of a stand mixer. Mix on medium speed for approximately 2 minutes (note a hand mixer or whisk may also be used).
Add the vanilla extract and mix briefly.
Add one-third of the flour mixture and mix on low speed until incorporated. Add one-half of the milk and vegetable oil and mix until incorporated. Add another third of the flour mixture and mix till smooth. Add the remaining oil and milk and mix till smooth. Finally, add the remaining flour mixture and mix until smooth.
Place one Oreo in each cupcake liner.
Fill cupcake liners ⅔ full of batter.
Bake for 20 - 24 minutes. Cool completely before adding icing.
Decorate Mummies
Thinly roll out white fondant. Cut 2" strips no wider than ⅛". Lightly brush water on each strip and randomly crisscross on each Oreo.
Cut out fondant dots the size you would like the eyes (2 dots for each mummy). Lightly moisten the back of the dot and place on the mummy Oreo. Place a black dot of fondant on each eye or draw a dot with a food coloring marker.
Cream Cheese Icing
Place the cream cheese and butter in the bowl of a mixer. Mix on medium speed until well combined. Add the confectioner's sugar and vanilla. Mix for 2 - 3 minutes on medium speed.
Cupcake Assembly
Pipe or spread the cream cheese icing over the top of each cupcake. Sprinkle 'dirt' using crushed Oreos.