Peel and slice cucumbers; place in a container that has a lid. Finely chop red onion; add to cucumbers.
Whisk together the oil, vinegar, sugar, salt and pepper until sugar is dissolved. Pour marinade over the cucumbers. Stir well to combine. Cover and refrigerate cucumbers for at least 3-4 hours, stirring occasionally. Enjoy.
Please note: The 10 minute prep time is "active" prep time. I did not include the 3-4 hours "inactive" refrigeration time necessary for all flavors to permeate and come together. Please plan accordingly.
Mom's Marinated Cucumbers https://www.thegratefulgirlcooks.com/moms-marinated-cucumbers/