Preheat oven to 300°. Spray a 9x5-inch loaf pan with cooking spray with flour.
In a large bowl, combine butter and sugar. Beat at medium speed with a mixer until fluffy. Add eggs, one at a time, beating well after each addition.
In a small bowl, sift together flour and salt. Gradually add flour mixture to butter mixture alternately with cream, beginning and ending with flour mixture. Scrape seeds from vanilla beans into batter; add vanilla extract, and beat to combine. Spoon batter into prepared pan. Bake for 1 hour.
Cover loosely with aluminum foil, and bake until a wooden pick inserted in center comes out clean, 5 to 10 minutes more. Let cool in pan for 15 minutes. Remove to wire rack, and let cool completely. Serve with whipped cream and fresh berries.