The ornamental design for a baking pan, as shown and described.
FIG. 1 is a top view of a baking pan showing my new design; and,
FIG. 2 is a cross-sectional view along the line 2-2 in FIG. 1.
The cross-section of each dimple taken around the circumference of each dimple is the same and all of the dimples are generally the same.
The portions in the drawings illustrated in broken lines represent the environment of the design and therefore form no part of the claimed design. The dash-dot-dash lines between the rows of dimples indicate that there are various numbers of dimples in each row.