Follow your muffin recipe, and mix the ingredients well.
Scoop out your muffin batter into the paper liners.
Place the entire muffin tin in the freezer (on a flat surface) and freeze until solid (at least 2 hours).
Once the muffin batter is completely frozen, take the paper liners out of the tin and place them in a freezer-safe container or bag.
Return the batter to the freezer.
When you're ready to bake the muffins, place the liners inside the muffin tin as needed, and bake accordingly (adding a few minutes to the baking time if taken immediately from the freezer)
Notes
Muffin batter can be stored up to 3 months in the freezer. Using a large ice cream scoop can ensure that you divide the batter equally for each muffin.
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