Slow Cooker Poppy Seed Ham and Cheese Slider Filling Tips, FAQ & printable recipe

Tips for success

To serve these as sliders, slice your preferred slider buns or dinner rolls in half and toast them lightly under the broiler before piling on the filling. The toasted bread provides a nice contrast to the soft, melty ham and cheese. If you are serving a large crowd, you can keep the filling warm in the slow cooker on the 'warm' setting for up to an hour, ensuring every guest gets a hot sandwich.

For an extra touch of flavor, consider adding a small amount of finely minced fresh chives or green onions to the filling after it has finished cooking. These fresh herbs provide a bright pop of color and a mild onion flavor that complements the richness of the butter and Swiss cheese. Always add fresh herbs at the very end to keep them vibrant and prevent them from wilting too much in the residual heat.

Variations

• Ham and Cheddar Twist: Replace the Swiss cheese with sharp cheddar for a bolder flavor profile. The sharpness of the cheddar pairs exceptionally well with the tanginess of the Dijon mustard.
• Spicy Dijon Filling: Add a teaspoon of red pepper flakes or a dash of hot sauce to the butter and mustard mixture for a subtle heat that cuts through the richness.

Storage and make-ahead

Fridge

Store in an airtight container in the refrigerator for up to 3 days.

Freezer

Freeze in a freezer-safe container for up to 1 month. Thaw in the refrigerator before reheating.

Reheat

Reheat in a saucepan over low heat or in the microwave until heated through, adding a splash of water if needed to loosen the sauce.

If you have leftovers, allow the filling to cool for no more than two hours at room temperature before transferring it to an airtight container. Properly stored, the filling will remain fresh in the refrigerator for up to three days.

When ready to use, ensure it is reheated thoroughly until steaming hot. Avoid keeping the filling at room temperature for extended periods to maintain food safety and quality standards.

You can prepare the sauce mixture up to 24 hours in advance and keep it refrigerated in a sealed container. When you are ready to cook, simply assemble the ham and cheese in the slow cooker, whisk the sauce briefly to recombine, and pour it over.

This makes the assembly process even faster on the day of your event, allowing you to focus on other preparations while the slow cooker handles the main cooking task.

Serving ideas

This filling is best served hot and fresh from the slow cooker. Scoop a generous portion onto split slider buns or soft dinner rolls.

The combination of the buttery, mustard-infused ham and the melted Swiss cheese creates a rich flavor that pairs perfectly with simple side dishes like a crisp green salad, coleslaw, or potato chips. It is an excellent choice for casual buffet-style service where guests can assemble their own sandwiches.

For a more polished presentation, you can arrange the assembled sliders on a large platter and garnish them with a few extra poppy seeds or a sprinkle of fresh parsley.

Because the filling is quite flavorful, it does not require additional condiments, though some guests may enjoy extra Dijon mustard on the side. Ensure you have plenty of napkins available, as these sliders are best enjoyed warm and can be slightly messy to eat.

Frequently asked questions

Recipe card

Slow Cooker Poppy Seed Ham and Cheese Slider Filling

Prep 5 minCook 2 hRest 5 minTotal 2 h 10 minServes 12

Ingredients

• 1 lb thinly sliced deli ham
• 8 oz shredded Swiss cheese
• 1 tbsp poppy seeds
• 4 tbsp unsalted butter, melted
• 2 tbsp Dijon mustard

Instructions

1. Place the thinly sliced deli ham into the bottom of the slow cooker, ensuring the slices are folded to create texture and volume.
2. Evenly distribute the shredded Swiss cheese over the ham layer, then sprinkle the poppy seeds over the top of the cheese.
3. In a small bowl, whisk together the melted butter and Dijon mustard until smooth. Pour this mixture over the cheese and ham. Cover the slow cooker and cook on low for 2 hours.

Contains: milk, mustard

Estimated nutrition per serving

Calories

280

Protein

18 g

Carbohydrates

4 g

Fat

21 g

Fiber

0.5 g

Sugar

1.5 g

Sodium

750 mg

Automatic estimate from the ingredient list, not laboratory-verified.