-9x5x3-inch loaf pan or casserole dish (with tin foil to cover) -Lasagna Noodles (Cooked or oven-ready) -1lb Medium Ground Beef -2 Sliced Portabella Mushrooms -1 Jar Tomato Sauce -1 Chopped Small Red Onion -1/2lb Ricotta Cheese -3/4lb Crumbled Feta Cheese -Chopped Baby Spinach (I use 3 handfuls) -Whole Baby Spinach (Enough to cover bottom of pan) -3 Diced Field Tomatoes (Save the juices) -2 Cups of Shredded Provolone -Basil and Oregano to Taste