Combine first 3 ingredients in a large zip-top plastic bag. Seal and marinate at room temperature 30 minutes, turning bag occasionally.
Combine 1/2 cup boiling water and mushrooms; cover and let stand 30 minutes. Drain through a sieve over a bowl, reserving mushrooms and 1/4 cup soaking liquid. Chop mushrooms.
Heat a large skillet over medium-high heat. Sprinkle beef mixture with 1/4 teaspoon salt. Coat pan with cooking spray. Add half of beef mixture to pan; sauté 5 minutes, turning to brown on all sides. Place browned beef mixture in a 6-quart electric slow cooker. Repeat procedure with cooking spray and remaining beef mixture. Add wine and broth to skillet; bring to a boil, scraping pan to loosen browned bits. Pour wine mixture into slow cooker. Add mushrooms, reserved 1/4 cup soaking liquid, remaining 1/2 teaspoon salt, olives, and next 5 ingredients (through tomatoes). Place peppercorns, parsley sprigs, thyme sprigs, bay leaf, and orange rind on a double layer of cheesecloth. Gather edges of cheesecloth together; secure with twine. Add cheesecloth bundle to slow cooker. Cover and cook on LOW for 6 hours or until beef and vegetables are tender. Discard the cheesecloth bundle.
Combine 1 tablespoon water and cornstarch in a small bowl, stirring until smooth. Add cornstarch mixture to slow cooker; cook 20 minutes or until slightly thick, stirring occasionally. Sprinkle with chopped parsley and chopped thyme.
3 More Ways with Dried Porcini Mushrooms
Rehydrate mushrooms with boiling water; use soaking liquid and mushrooms to flavor risotto.
Enrich soups and stews with soaking liquid and mushrooms.
Use soaking liquid and mushrooms as the base for pasta sauce.