In large bowl, beat together eggs, milk, dill weed, salt, if desired, and lemon juice until well blended. Stir in ham, mushrooms and onions. In preheated 350°F oven, melt butter in 13 x 9 x 2-inch baking pan. Pour in egg mixture. Place in oven. As mixture begins to set, after about 8 minutes, pull out oven rack. Gently draw an inverted pancake turner completely across bottom and sides of pan, lifting and turning mixture to form large, soft curds. Return to oven. Repeat a few more times until eggs are thickened and no visible liquid egg remains, about 12 to 15 minutes.* Do not stir constantly.

*Although it’s best to serve scrambled eggs immediately after cooking, you can hold them for a short time. Place pan of cooked eggs over pan of hot water. (Scrambled eggs will quickly become overdone if held over direct heat.)