Suggestions to use mangoes?

Make a mango purée with a little orange juice, steep some mint in there to infuse flavor. Then you can freeze it in portions and use for a quick sauce, marinade, smoothie base, dressing, etc.

I'd like to second the recommendation to cut the mangos into chunks and freeze them. I regularly use frozen mango in this recipe (http://www.food.com/recipeprint.do?rid=215493) for Thai mango chicken. Oh, and I substitute frozen, boneless chicken thigh for the chicken breast. As long as I have fresh red bell pepper and cilantro, it's a recipe that I can make from what I have in the pantry & freezer.

I also like to combine mango & ? when I make jam. I use the peach jam recipe from Jeanne Lesem's _Preserving Today_ jam with fresh lemon juice. Mango & peach is terrific. Mango & pineapple is good. Mango, pineapple with a some chopped candied ginger is incredibly good.

Enjoy the mango.

I love Mollie Katzen's mango ketchup recipe.
http://www.walnuts.org/cooking-with-walnuts/recipes/mango-ketchup/

If they are not very sweet I would make a green mango salad and just leave out the sugar.

http://www.epicurious.com/recipes/food/views/green-mango-salad-51223

i had mango pudding at a chinese dim sum restaurant. it is made with jello and is divine. some recipes call for coconut milk. although you might want to taste them to see if they are sweet enough.

How about mango pineapple salsa? Great on grilled chicken.. The sweetness of the pineapple and the bit of the jalapeño or habanero can camouflage the mango if it's not perfect

When I'm stuck with a mediocre mango, I freeze it in chunks, for future use in smoothies. Even subpar mangoes are great in smoothies, because you can fix the defecits in their flavor with sugar or acid, directly or by adding other fruits.

Mango chutney comes to mind - this is a great one:
https://food52.com/recipes/3399-mama-s-mango-chutney

Or this
https://food52.com/recipes/17105-buttermilk-mango-upside-down-cake

Good luck!