Rainbow Salmon Skewers

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These salmon skewers are on the table in 20 minutes: threaded with four colors of bell pepper and finished with a lemon butter drizzle made with Wonderful Seedless Lemons. Naturally seedless zest and juice go straight into the butter, no straining needed. A lemon wedge at the table closes it out.

Difficulty: Easy — The technique is as simple as thread, brush, and bake. The lemon butter drizzle, made with seedless lemon zest and juice melted into warm butter, is what takes these from weeknight to worthy of a dinner party.

Overview

Salmon skewers are one of the oldest cooking techniques in the world; the oven version adds two things: colorful bell peppers that caramelize at 400°F to offset the salmon's richness, and a lemon butter sauce where melted butter captures the volatile aromatic oils from lemon zest and holds them suspended, delivering a depth of lemon flavor that juice alone cannot achieve. The four-color pepper combination is functional, not decorative. Red onion adds another layer, softening and turning slightly jammy at the edges. You get a complete plate, protein and vegetables, on a single stick.

Because Wonderful Seedless Lemons are naturally seedless, zesting and juicing them directly into the butter is genuinely seamless. There are no seeds to fish out of a warm sauce, no strainer to dig out of the drawer, no pause mid-drizzle to pick a pip off a fillet. The zest comes off the microplane cleanly, the juice goes in straight from the cut lemon, and the sauce is done in under two minutes. For a seafood dish where the final drizzle happens right before serving, that ease matters. The salmon is hot, the butter is warm, and you want to move quickly.

Wonderful Seedless Lemons are naturally seedless, Non-GMO Project Verified, and California-grown.

Ingredients

Skewers:

6 wooden skewers (soaked in water for at least 30 minutes)
1½ lbs. skinless, boneless salmon fillet, cut into 2" pieces
½ each red, green, yellow, and orange bell pepper, cut into 2" pieces
1 large red onion, cut into 2" pieces
2 tablespoons olive oil
1 teaspoon salt
½ teaspoon ground black pepper

Lemon Butter Drizzle:

¼ cup (½ stick) unsalted butter, melted
Zest from 1 Wonderful Seedless Lemon (about 1 teaspoon)
Juice from 1 Wonderful Seedless Lemon (about 2 tablespoons)

For Serving:

Wonderful Seedless Lemon wedges

Instructions

Prep the Skewers

Soak six wooden skewers in cold water for at least 30 minutes before threading. Dry skewers ignite easily under oven broiler heat and can char before the salmon is done. Soaking prevents this without any effect on the final result.
Preheat your oven to 400°F. Line a rimmed baking sheet with parchment paper.
Cut the salmon into uniform 2" pieces. Uniformity matters here: pieces that are too small will overcook before the larger ones are done. Cut the bell peppers and red onion into 2" pieces as well, roughly matching the salmon in size so everything cooks at the same rate.

Bake the Salmon

Thread the skewers, alternating salmon pieces with pepper and onion. Aim for two to three pieces of salmon per skewer with vegetables between and at each end. Do not pack the pieces tightly together; a small gap between them allows heat to circulate and the edges to color slightly.
Arrange the skewers on the prepared baking sheet. Brush generously with olive oil on all sides, then season with salt and black pepper.
Bake for about 10 minutes, turning the skewers once at the five-minute mark. The salmon is done when it is opaque all the way through, flakes easily when pressed with a fork, and reads 125–130°F on an instant-read thermometer for medium, or 145°F if you prefer it fully cooked through. Do not overbake: salmon continues to carry over slightly after it leaves the oven.

Make the Lemon Butter

While the skewers are in their final two minutes of baking, melt the butter in a small saucepan over low heat or in a microwave-safe bowl in 20-second intervals.
Zest the seedless lemon directly into the melted butter, then cut and squeeze in the juice. Stir briefly to combine. The sauce comes together in under two minutes. Because the lemons are naturally seedless, no straining is needed.

Serve

Remove the skewers from the oven and let them rest for one to two minutes.
Drizzle the lemon butter evenly over each skewer. Serve immediately with seedless lemon wedges on the side for an extra squeeze at the table.

Optional Tips

Soak wooden skewers before you use them. Dry wood near oven heat chars quickly, which can give the salmon a slightly bitter note at the point where the skewer meets the flesh. Thirty minutes in cold water is the minimum; up to an hour is better. If you have metal skewers, they skip this step entirely.

Choose wild-caught salmon when you can. Wild-caught sockeye and coho are leaner and more deeply flavored than farmed Atlantic salmon, and they hold their shape well on a skewer. Farmed salmon has a higher fat content and a milder flavor, which means it is also very forgiving if you go slightly over on cook time. Either works here; the lemon butter drizzle complements both.

Cut peppers to the same size as the salmon. The goal is for everything to finish at the same time. If the pepper pieces are significantly larger than the salmon, they will still have some crunch when the fish is done. If they are too small, they will soften before the salmon hits temperature. A 2" piece is the target for both.

Know when the salmon is done. The most reliable check is an instant-read thermometer: 125–130°F for medium (slightly translucent in the center, moist and silky), 145°F for fully cooked through. Visual cues also work: the flesh shifts from translucent pink to opaque, and it flakes apart easily when pressed. If the salmon is still pulling away from the fork in one piece without separating at the flakes, it needs another minute or two.

Oven, grill, or air fryer: all three work. The oven is the most hands-off. A grill over medium-high heat gives the peppers a char and the salmon a slight crust. An air fryer at 400°F for eight to 10 minutes delivers a slightly crispier exterior with no grill setup required. Adjust time slightly depending on the thickness of your salmon pieces.

Assemble up to four hours ahead. Thread the skewers, brush with olive oil, season, and refrigerate uncovered on the parchment-lined baking sheet. When you are ready to cook, slide the pan directly into the preheated oven. The lemon butter takes two minutes and is best made fresh just before serving.

Store and reheat properly. Leftover salmon skewers keep in an airtight container in the refrigerator for up to two days. To reheat, place them on a parchment-lined baking sheet in a 275°F oven for eight to 10 minutes, just until warmed through. High-heat reheating dries out the fish quickly. The lemon butter can be stored separately and re-melted over low heat.

Serve with something bright and starchy. Salmon skewers pair well with a simple side that absorbs the lemon butter: couscous, rice pilaf, orzo, or crusty bread are all excellent. A crisp cucumber salad or arugula dressed with olive oil and a squeeze of seedless lemon rounds out the plate without competing with the fish.

Variations

Grilled Salmon Skewers. Prepare the skewers exactly as written, then cook them over a gas or charcoal grill heated to medium-high (about 400–425°F). Grill for four to five minutes per side, turning once. The grill gives the peppers a light char and the salmon a slightly smoky exterior that the oven cannot replicate. Brush the grates with oil before placing the skewers to prevent sticking.

Air Fryer Salmon Skewers. Place assembled skewers in a single layer in the air fryer basket. Cook at 400°F for eight to 10 minutes, flipping once halfway through. The circulating heat gives the exterior of the salmon a slightly crisper texture while keeping the interior moist. Use metal skewers or trim wooden ones to fit the basket, and check the internal temperature at the eight-minute mark.

Asian-Inspired Salmon Skewers. Marinate the salmon pieces for 20–30 minutes in a mixture of two tablespoons soy sauce, one tablespoon sesame oil, one tablespoon honey, one teaspoon grated ginger, and one clove of minced garlic before threading. Skip the olive oil brush; the marinade provides enough fat. Finish with a drizzle of seedless lemon juice instead of the full butter sauce, and garnish with toasted sesame seeds and sliced scallions.

Mediterranean Herb Salmon Skewers. Add two teaspoons of dried oregano and one teaspoon of smoked paprika to the olive oil before brushing the skewers. Swap the red onion for chunks of zucchini or cherry tomatoes on the skewer. After baking, drizzle with the lemon butter as written and finish with a spoonful of plain Greek yogurt and fresh dill alongside.

Teriyaki Salmon Skewers. Brush the threaded skewers with a simple teriyaki glaze (two tablespoons soy sauce, one tablespoon mirin, one tablespoon brown sugar, simmered until slightly thickened) instead of olive oil. Bake as directed. Serve with steamed rice and a wedge of seedless lemon to cut the sweetness of the glaze.

Mocktail Pairing: Lemon Ginger Sparkler. Combine two ounces of fresh seedless lemon juice, one ounce of ginger simple syrup, and four ounces of sparkling water over ice. The lemon ties directly to the butter drizzle on the skewers, and the ginger mirrors the warmth of the black pepper in the seasoning. Light, refreshing, and built around the same seedless lemons already on your cutting board.