Preheat oven to 400°F (I might lower this to 375 so the muffins don't turn out so brown). Line 12 muffin cups.
Combine flour, sugar, salt and baking powder in a medium bowl. Place vegetable oil into a 1 cup measuring cup and add the egg and enough milk to fill the cup to 1 cup mark. Pour into flour mixture. Stir with a large spoon. Crush oreos in a food processor. Take 1/2 cup of oreos and stir into batter.
Pour batter into muffin cups, about 2/3 full. Sprinkle remaining oreo crumbs on the surface of the batter.
Bake for about 20 minutes until muffins turn golden brown and toothpick inserted comes out clean.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.