Combine apples, cranberries, brown sugar, apple cider, and cinnamon in a small saucepan over medium-high heat. Bring sauce to a simmer then reduce to medium-low and allow to simmer 5-8 minutes, stirring occasionally until sauce is reduced and thickened. Keep sauce warm for serving.
In a large shallow bowl, whisk eggs until smooth. Add eggnog and nutmeg and whisk well until smooth.
Brush melted butter on a griddle or large skillet. Working in batches as necessary, begin dipping bread slices into egg mixture and place on griddle or skillet. Cook 2-4 minutes on first side, flip, and continue cooking French toast until golden brown. Repeat cooking with remaining bread, adding more butter to pan as needed.
Serve French toast warm with cranberry apple sauce. Enjoy!
Notes
Storing InstructionsFrench toast is best if served immediately after assembly.