Preheat oven to 350 degrees. Prepare baking pans.
Rinse, then pat dry the strawberries. Mash or puree the strawberries, then cook down in a sauce pan until volume is approximately half of where it started. You need 3/4 cup strawberry puree. Cooking down the strawberries intensifies the flavor! Cool before using.
Mix together cake mix, gelatin or pudding mix. Add room temperature puree, eggs, oil, and vanilla. Beat until all ingredients are well blended. Mix for an additional 1-2 minutes, scraping down sides of the bowl.
Pour batter into prepared pan(s) or cupcake tin.
Bake approximately 18-22 minutes, until top is lightly browned and knife comes out clean.
Allow cake to cool at least 15 minutes before releasing from the pan.
Frost or glaze (to make the frosting thinner for a bundt cake glaze, add a little cream (or alternative milk) until desired consistency is reached.