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Strawberry Swirl Crumble Bars (Collagen‑Infused)

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Ingredients

Base Layer

  • 1 egg
  • ½ cup Greek yogurt
  • ⅓ cup melted butter or oil
  • ½ cup sugar or maple syrup
  • 1 teaspoon vanilla extract
  • 1 ½ cups all‑purpose flour
  • 1 teaspoon baking powder
  • Pinch of salt
  • 1 scoop collagen powder

Strawberry Swirl

  • 1 cup chopped strawberries
  • 1 tablespoon sugar or honey
  • 1 teaspoon lemon juice
  • 1 teaspoon cornstarch
  • Optional: ½ scoop collagen

Crumble Topping

  • 4 tablespoon butter
  • 5 tablespoon brown sugar
  • 1 cup flour

Instructions

  • Make the Strawberry Swirl Simmer strawberries, sugar, lemon juice, and cornstarch until glossy and thick. Cool slightly.
  • Mix the Base Whisk egg, yogurt, butter, sugar, and vanilla. Add flour, baking powder, salt, and collagen. Spread evenly into a parchment‑lined 8×8 pan.
  • Add the Swirl Spoon strawberry mixture over the base. Drag a knife through to create a marbled effect.
  • Add the Crumble Mix butter, brown sugar, and flour until sandy. Sprinkle generously over the top.
  • Bake Bake at 350°F for 25–30 minutes until golden and set.
  • Cool Completely Let cool 45–60 minutes before slicing for clean edges.