Ingredients
1 egg yolk (after your PED says it's ok)
1 tablespoon water, breast milk or formula
1 teaspoon unsalted butter
2 tablespoon grated cheddar cheese

Procedure
With fork blend yolk and milk (water or formula) in bowl. Melt butter in small skillet over low heat.
Pour egg into skillet and cook until firm.
Sprinkle with cheese, fold over until cheese melts..