Preheat your oven to 400 degrees.
Prepare the muffin tins by coating them with non-stick cooking spray.
Take 10 biscuits and place one in each section of the muffin tins.
In a small bowl, combine mayo and mustard, stirring until the mixture is well blended.
Using your thumbs, press down the center of each biscuit to create deep indentations.
Spoon approximately 1 teaspoon of the mayo mixture into each indentation.
Now, top the mayo mixture with cubes of ham, followed by cubes of cheddar cheese.
Place the muffin tin on a foil-lined rack in the oven.
Bake until the biscuits turn golden, puff up, and overflow with cheese, usually about 10-12 minutes.
Once baked, remove the muffin tin from the oven and let it stand for 3 minutes before removing the biscuit cups from the tins.
Serve these delightful biscuit cups while they're still hot. Enjoy the cheesy goodness!