Oster TSSTTVMATT Manual. View the Oster TSSTTVMATT Manual. The Oster TSSTTVMATT Manual covers all the features of the countertop oven, including the easytouse dial controls, two rack positions, and 60minute timer with auto shutoff and bell signal. Large capacity can accommodate casserole dishes and fit an entire frozen pizza. Adjustable broil for lowheat broiling, like cheesy garlic bread or highheat broiling for meats. rn. You are viewing the manual and parts listings for Oster Small Appliances.