Bring a pot of lightly salted water to a boil and cook your potatoes until they’re soft. Once cooked, drain the potatoes, cut them in half, and transfer them to a large bowl. Set aside.
Cook the bacon until crispy. Remove the bacon from the pan and pat it dry with a paper towel to remove excess grease, then crumble the bacon into a small bowl.
Add the mayonnaise, lemon juice, green onions, rosemary, and salt to the bowl and stir to combine.
Scoop the dressing over the potatoes and toss until the potatoes are coated evenly. Serve immediately, or cover and refrigerate until you’re ready to serve.