Grilled Cheese with Sautéed Onions and Bell Pepper

Ingredients

• 1 large onion, sliced.
• 1 large bell pepper, cut in strips
• 6 Tablespoons butter, divided
• 8 slices bread. (Homemade is best, but use whatever you like your grilled cheese on)
• 4 slices mild cheddar cheese, or enough to completely cover 4 of the bread slices
• Salt and pepper to taste