Barry has a brilliant suggestion for this. Some simple programming but it works great.
“For dates in column B, starting in B2.
Enter the first Monday date (May 10) in B2.
Select B2, then drag the round control at the lower right down four rows to B6 (May 14).
Click on B7 and enter =B2+7
Select B7 and drag the control down as many rows as you need.”