Grilled ham and cheese is, for me, one of the best ways to gain time on lunch and dinner. Grilled ham and cheese is, for me, one of the best ways to gain time on lunch and dinner.

”For me” is not important in this sentence, but it adds extra information. It is not important because you can still understand the sentence without adding “for me.” This is called “nonrestrictive clause.” You can use commas to insert the extra information. Grilled ham and cheese is one of the best ways to gain time on lunch and dinner. = Grilled ham and cheese is, for me, one of the best ways to gain time on lunch and dinner.

My grandma didmade this recipe a lot of times, but she always used an oven to heat them. My grandma made this recipe a lot of times, but she always used an oven to heat them.

You can use “did,” but “made” sounds more natural.

But last cChristmas she bought me a waffle machine that can also be used as a sandwich toaster machine. But last Christmas she bought me a waffle machine that can also be used as a sandwich toaster machine.

It also makes the Ggrilled ham and cheese less dry. It also makes the grilled ham and cheese less dry.

The advantage is that this machine warm reallys much faster than a classic oven and use less electricity. The advantage is that this machine warms much faster than a classic oven and use less electricity.

You would not say “really faster,” you can say “much” or “more” instead.