Preheat oven to 400 degrees. Coat an oven-safe skillet or 9-inch pie plate with nonstick spray.
In a small bowl, add bread crumbs, parmesan cheese, butter, and basil and toss to combine.
In a large bowl, add shrimp, half the mozzarella, cream, pesto, and salt. Add half the parmesan mixture and toss to combine.
In the bottom of prepared skillet, add tomatoes. Top with shrimp mixture. Sprinkle with remaining parmesan mixture. Arrange remaining mozzarella cheese on top.
Bake until golden brown and bubbly, about 20 to 25 minutes. Remove from oven and garnish with basil leaves. Serve with toasted baguette slices.