I used to use reduced-fat whomp biscuits for the DH's sausage biscuits until we checked out the salt. One biscuit supplies 17% of the RDA. Since the sausage has salt too, that's a double dose.

Now I make these:

MYSTERY BISCUITS

Whisk together:

2 cups flour
2 tsp baking powder
1 Tbsp milk powder (if you have it around)

Pour on top:

3/4 cup water
1/4 cup mayonnaise

Stir well, knead a few times, form into 8 flattened balls. Bake at 375 for about 22 mins on a greased cookie sheet.
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A note about whomping. Don't whomp the package on the counter unless you want to risk tiles popping off and tools bouncing around. Instead, press the tip of a spoon into the seam of the package.