Sift together flour, baking powder, sugar, and salt.

In another bowl, whisk together the eggs and 1 1/2 cups of milk. Add to flour mixture, stirring only until smooth.

Combine peanut butter and melted butter. Blend in mixture.

If the batter seems too thick to spread, add a little more milk.

Cook on a hot, greased griddle, using about 1/4 cup of batter for each pancake.

Cook until bubbly and somewhat dry around the edges, and lightly browned on the bottom; turn and brown the other side.