Miscellaneous with plum

4 plum tomatoes , halved lengthwise 3 tablespoons olive oil kosher salt and pepper 1 lb london broil beef , sirloin or 1 strip steak 2 medium onions , sliced[...]

Salt and pepper 1 pound asparagus, tough ends removed, cut into 1-inch pieces 1 tablespoon unsalted butter 1 tablespoon olive oil 10 ounce button mushrooms,[...]

2 pounds of cleaned haddock , cod or other white fish 2 plum tomatoes thinly sliced 1 package fresh or frozen spinach drained and water squeezed out blotted[...]