Put a frozen ground pork mix in the crock and 4 everyday items to get a classic summer meal so delicious your friends will be begging for more.

This 5-ingredient slow cooker vintage picnic ham loaf is the kind of easy, old-fashioned recipe our Midwestern grandmas leaned on for church potlucks and summer picnics. You start with a frozen ground pork mix block, drop it straight into the crock, and add just four everyday pantry items to build that sweet-and-savory, hammy flavor everyone remembers from those metal folding chairs and red-checkered tablecloths. It’s hands-off, budget-friendly, and perfect when you want a classic summer meal that tastes like you fussed all day, even though the slow cooker did the work.

Serve thick slices of the ham loaf with potato salad, coleslaw, or macaroni salad for that true picnic feel. Buttered corn on the cob, baked beans, or a simple green salad round out the plate nicely. For a backyard gathering, I like to set out soft dinner rolls so folks can tuck slices of ham loaf inside like little sandwiches, with extra glaze on the side and some crunchy dill pickles to cut the sweetness.

Servings: 6

2 pounds frozen ground pork mix block (kept as one solid block, not thawed)

Place the frozen ground pork mix block in the bottom center of a 4- to 6-quart slow cooker. It should sit flat on the bottom; do not add water.

In a small bowl, stir together the ketchup, brown sugar, and yellow mustard until smooth and glossy. This will be your sweet-and-tangy vintage-style glaze.

Sprinkle the bread crumbs evenly over the top of the frozen pork block, letting some fall down the sides if they want to. Gently pat them so they stick in place; this will help soak up juices and give the loaf some structure as it cooks.

Spoon about half of the glaze over the top and sides of the frozen pork block, spreading it as best you can. It will slide a bit on the frozen meat, and that’s okay—more will go on later.

Cover the slow cooker with the lid and cook on LOW for 6 to 7 hours, or on HIGH for 3 1/2 to 4 hours, until the pork is fully cooked through. The internal temperature in the center should reach at least 160°F (71°C). Do not lift the lid during the first 2 hours so the loaf can set up as it thaws and cooks.

About halfway through the cooking time, carefully spoon some of the juices from the bottom over the loaf, then spread on the remaining glaze. If the loaf has softened enough, you can gently nudge the crumbs and meat together with a spoon to help it form a more even shape, but don’t worry if it’s rustic-looking.

Once fully cooked, tilt the slow cooker slightly with a potholder and spoon off excess grease from the edges if needed, leaving the flavorful juices and glaze. Let the ham loaf rest in the slow cooker, uncovered, for 10 to 15 minutes to firm up for slicing.

Use a wide spatula to gently lift and support the loaf as you slice it directly in the crock or transfer it to a serving platter. Cut into thick slices and spoon any remaining glaze and juices over the top before serving warm.

For a little smoky flavor, replace half of the ketchup with barbecue sauce. If your family likes more tang, add an extra teaspoon of mustard or a splash of apple cider vinegar to the glaze. For a fruitier, truly vintage picnic feel, you can stir 2 to 3 tablespoons of crushed pineapple (well drained) into the glaze before spreading it over the frozen pork block. Picky eaters who don’t love a lot of sweetness might prefer cutting the brown sugar back to 1/4 cup and serving extra ketchup at the table. You can also use seasoned bread crumbs instead of plain for a bit more herby flavor, or swap in quick oats if that’s what you have on hand (use the same amount). Food safety tips: Always start with a fully frozen, commercially ground pork mix from a trusted source, and keep it frozen until you’re ready to place it in the slow cooker. Cook on LOW or HIGH only as directed; do not use the WARM setting to cook from frozen. Use a meat thermometer to check that the center of the loaf reaches at least 160°F (71°C) before serving. Refrigerate leftovers within 2 hours in shallow containers, and reheat slices to 165°F (74°C) before eating. Avoid reheating in the slow cooker; instead, use the microwave, oven, or stovetop for safe reheating.