Fried Ham Sandwich with Onions & Mushrooms

4 slices of your favorite bread
2 ounces leftover Easter ham, sliced thin
1 small onion, halved and sliced thin into half-moons
8 ounces mushrooms, sliced and sautéed
Mayonnaise & mustard
1⁄2 teaspoon butter
Melt butter in a large skillet or on a grill
Toss in onion and mushrooms and cook until translucent.
Add ham on top of onion and mushrooms and continue to warm on medium heat for 3-4 minutes.
Flip over ham, onion and mushrooms, continue to warm for 2 more minutes.
Spread bread with mayonnaise and mustard, add warmed ham, onion and mushroom mixture.
Press down on the sandwich and give it a little smash.
