Step 1: Prepare Your Ingredients - Gather all your ingredients: bread, cheese, pesto, roasted red pepper spread, and mayonnaise.
Step 2: Spread the Mayonnaise - Spread half of the mayonnaise on one side of one slice of bread. Repeat with the second slice.
Step 3: Layer the Spreads - On the unbuttered side of one slice, spread the pesto. On the other slice, apply the roasted red pepper spread.
Step 4: Add the Cheese - Place the slice of provolone cheese on top of the pesto.
Step 5: Assemble the Sandwich - Place the slice with roasted red pepper spread on top of the cheese slice.
Step 6: Heat the Skillet - Preheat your skillet over medium heat.
Step 7: Grill the Sandwich - Grill the sandwich for about 3-4 minutes until the bottom is golden brown.
Step 8: Flip and Grill - Carefully flip the sandwich and grill the other side for another 3-4 minutes.
Step 9: Serve and Enjoy - Remove the sandwich from the skillet, let it sit for a minute, slice it in half, and serve warm.