Homemade strawberry cake filling

Surprising fact: a quick 5-minute prep and a 12-hour chill can change a spread from runny to perfectly sliceable — small steps, huge payoff. This simple, from-scratch strawberry cake filling uses just a few core ingredients: 3 cups strawberries, 1/2 cup granulated sugar, a splash of lemon, and a cornstarch slurry. A brief simmer and…