Start by beating the softened cream cheese with granulated sugar until completely smooth. Take your time with this step so the base becomes creamy and lump-free. Once blended, set it aside so it’s ready to fold into the whipped cream.
In a separate bowl, whip the heavy cream until it begins to thicken. Add the powdered sugar and vanilla, then continue whipping until stiff peaks form. This whipped cream will give the lasagna its fluffy texture and help support the layers.
Gently fold the whipped cream into the cream cheese mixture. Use a slow, sweeping motion so you don’t deflate the cream. The goal is a light, airy filling that spreads smoothly and holds its shape.
Place a single layer of graham crackers in the bottom of your dish. Spread half the cream mixture over them, smoothing it evenly. Sprinkle half the diced strawberries across the top. Add another layer of graham crackers, followed by the remaining cream mixture, and finish with the remaining strawberries.
Cover the dish and refrigerate for 4–5 hours until set. During this time, the graham crackers absorb moisture and transform into soft, cake-like layers. The dessert will slice beautifully once fully chilled.