This dressing has only three ingredients, and it takes just a few minutes to prepare. I think the flavor is better after it's been refrigerated for a while - the blue cheese flavor seems to infuse the creamy dressing rather than just being bits of blue. But it's not a bad thing that it improves with age. If you're making this for a party or event, you can make it the day before, so it's one less thing to do on party day.
I was tempted to add herbs or other flavorings to this - a pinch of hot pepper or perhaps some other spice. But then I realized that additions would just take away from the blue cheese flavor. And if I wanted something else, I could simply add those flavors to my salad. Some fresh chopped parsley, perhaps?
You can make this as smooth or as chunky as you like. Just blend longer for a smoother dressing. But I do like the little pops of blue cheese, so I left it a little bit lumpy. The dressing gets thicker when you refrigerate, and the thickness depends a little on how this your Greek yogurt is. If it's too thick, just mix in some milk or buttermilk to thin it - or you could even add water to thin it. Or, you can leave it thick and use it as a dip for vegetables.
Blue Cheese Dressing
1/2 cup mayonnaise mayonnaise
4 ounces blue cheese, cut into chunks
Blend the yogurt and mayonnaise in your blender until combined. (You could also do this in a food processor, or by hand, but a blender makes it sooo easy.)
Add the blue cheese and pulse until the blue cheese is in bits as small as you like. Or keep blending until it's smooth, if that's what you prefer.
Taste and add salt or pepper, if desired. I liked it the way it was, but, hey, it's your taste buds you need to please.
Transfer to a container and refrigerate until needed.