VERSATILE SANDWICH MAKER - This sandwich maker is designed to be used in both microwave and oven. Its special embossed baking sheet ensures even cooking on both sides, making it ideal for sandwiches, bagels, burgers and burritos. PREMIUM MATERIALS - This sandwich maker features a food grade PTFE non-stick coating and an aluminum base. Silicone lid is splash, burn resistant and dishwasher safe for durability. Ingredient thickness: We recommend filling the sandwich maker to a maximum height of 3 cm (e.g. 1 slice of bread + thinly sliced meat + cheese + some vegetables). Avoid overloading loose ingredients (such as lettuce or mushrooms). Flatten or fry the ingredients previously to reduce their volume. Burn protection: After heating in the microwave or oven, let the lid sit for a few minutes before opening to avoid steam burns. Wear anti-scald gloves or a paper towel when opening the lid. Microwave tip: Heat this sandwich maker in the microwave or oven on medium-low power (500-800 watts) for 1 to 2 minutes to avoid overheating. For thicker ingredients, heat them in batches (first meat, then vegetables and bread). Note: This sandwich maker requires no electricity, preheating or batteries. It is designed to be used in microwave or oven.